/* =========================================================
   LINUX SECURITY PAGE
   Cybersecurity Life
   ========================================================= */

.linux-security-page {
    --linux-bg: #020812;
    --linux-bg-soft: #071524;
    --linux-panel: rgba(7, 24, 42, 0.92);
    --linux-panel-soft: rgba(10, 34, 57, 0.78);
    --linux-green: #45ff9c;
    --linux-cyan: #4eeaff;
    --linux-blue: #00bfff;
    --linux-purple: #8f7dff;
    --linux-red: #ff657f;
    --linux-orange: #ff9f43;
    --linux-yellow: #ffd166;
    --linux-text: #f4fbff;
    --linux-muted: #aac1d0;
    --linux-border: rgba(78, 234, 255, 0.22);
    --linux-shadow: 0 0 32px rgba(0, 191, 255, 0.13);
    position: relative;
    overflow: hidden;
    color: var(--linux-text);
    background:
        radial-gradient(circle at 12% 8%, rgba(0,191,255,.12), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(69,255,156,.08), transparent 26%),
        radial-gradient(circle at 48% 74%, rgba(143,125,255,.07), transparent 30%),
        linear-gradient(180deg, #020711 0%, #06101d 52%, #020811 100%);
    isolation: isolate;
}

.linux-security-page::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(0,191,255,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,191,255,.055) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,.96), transparent 98%);
    animation: linuxGridMove 18s linear infinite;
}

.linux-security-page::after {
    content: "";
    position: fixed;
    inset: -45%;
    z-index: -3;
    pointer-events: none;
    background:
        repeating-linear-gradient(
            122deg,
            transparent 0,
            transparent 86px,
            rgba(0,191,255,.025) 87px,
            transparent 88px
        );
    animation: linuxBackgroundSweep 26s linear infinite;
}

.linux-security-page *,
.linux-security-page *::before,
.linux-security-page *::after {
    box-sizing: border-box;
}

.linux-security-page a {
    text-decoration: none;
}

/* =========================================================
   HERO
   ========================================================= */

.linux-hero {
    min-height: 780px;
    padding: 115px max(28px, calc((100vw - 1180px) / 2)) 90px;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(430px, .95fr);
    align-items: center;
    gap: 64px;
    position: relative;
    overflow: hidden;
}

.linux-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(rgba(69,255,156,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,191,255,.07) 1px, transparent 1px);
    background-size: 54px 54px;
    transform: perspective(680px) rotateX(64deg) scale(1.55) translateY(28%);
    transform-origin: bottom;
    opacity: .74;
    animation: linuxHeroGrid 12s linear infinite;
}

.linux-hero::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--linux-cyan), var(--linux-green), transparent);
    box-shadow: 0 0 26px rgba(0,191,255,.7);
}

.linux-hero-content {
    position: relative;
    z-index: 2;
    animation: linuxFadeUp .9s ease both;
}

.linux-label {
    display: inline-block;
    margin-bottom: 18px;
    padding: 9px 14px;
    border: 1px solid rgba(69,255,156,.3);
    border-radius: 999px;
    color: var(--linux-green);
    background: rgba(69,255,156,.05);
    font-size: .74rem;
    font-weight: 900;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.linux-hero h1 {
    margin: 0;
    font-size: clamp(4rem, 8vw, 7rem);
    line-height: .95;
    letter-spacing: -.065em;
    text-transform: uppercase;
    background: linear-gradient(90deg, #fff, var(--linux-cyan), var(--linux-green));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 44px rgba(0,191,255,.13);
}

.linux-hero-content > p {
    max-width: 700px;
    margin: 28px 0 0;
    color: #b6cbd8;
    font-size: clamp(1rem, 1.8vw, 1.16rem);
    line-height: 1.82;
}

.linux-hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 34px;
}

.linux-primary-btn,
.linux-secondary-btn,
.linux-back-to-top-btn {
    position: relative;
    min-height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 22px;
    border-radius: 8px;
    overflow: hidden;
    font-weight: 900;
    letter-spacing: .025em;
    transition:
        transform .25s ease,
        box-shadow .25s ease,
        border-color .25s ease,
        color .25s ease;
}

.linux-primary-btn,
.linux-back-to-top-btn {
    color: #00150c;
    background: linear-gradient(135deg, var(--linux-cyan), var(--linux-green));
    box-shadow: 0 0 25px rgba(0,191,255,.25);
}

.linux-primary-btn::before,
.linux-back-to-top-btn::before {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-120%);
    background: linear-gradient(110deg, transparent 25%, rgba(255,255,255,.55), transparent 70%);
    transition: transform .55s ease;
}

.linux-primary-btn:hover::before,
.linux-back-to-top-btn:hover::before {
    transform: translateX(120%);
}

.linux-secondary-btn {
    color: #d4f8ff;
    border: 1px solid rgba(78,234,255,.44);
    background: rgba(2,14,27,.68);
}

.linux-primary-btn:hover,
.linux-secondary-btn:hover,
.linux-back-to-top-btn:hover {
    transform: translateY(-3px);
}

.linux-primary-btn:hover,
.linux-back-to-top-btn:hover {
    box-shadow: 0 0 35px rgba(0,191,255,.38);
}

.linux-secondary-btn:hover {
    border-color: var(--linux-green);
    box-shadow: 0 0 24px rgba(69,255,156,.14);
}

/* =========================================================
   HERO TERMINAL
   ========================================================= */

.linux-hero-visual {
    position: relative;
    z-index: 2;
    min-height: 510px;
    display: grid;
    place-items: center;
    animation: linuxFadeIn 1.1s ease both .15s;
}

.linux-terminal-window,
.permission-terminal,
.ssh-terminal,
.monitor-console {
    border: 1px solid rgba(78,234,255,.24);
    background:
        linear-gradient(145deg, rgba(7,25,43,.94), rgba(2,10,20,.98));
    box-shadow:
        0 0 38px rgba(0,191,255,.14),
        0 18px 46px rgba(0,0,0,.34);
    backdrop-filter: blur(10px);
}

.linux-terminal-window {
    width: min(520px, 100%);
    border-radius: 18px;
    overflow: hidden;
    animation: linuxTerminalFloat 4.8s ease-in-out infinite;
}

.linux-terminal-header,
.terminal-bar,
.monitor-console-header {
    min-height: 50px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 16px;
    border-bottom: 1px solid rgba(78,234,255,.12);
    background: rgba(0,0,0,.25);
}

.linux-terminal-header > span,
.terminal-bar > span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.linux-terminal-header > span:nth-child(1),
.terminal-bar > span:nth-child(1) { background: var(--linux-red); }

.linux-terminal-header > span:nth-child(2),
.terminal-bar > span:nth-child(2) { background: var(--linux-yellow); }

.linux-terminal-header > span:nth-child(3),
.terminal-bar > span:nth-child(3) { background: var(--linux-green); }

.linux-terminal-header p,
.terminal-bar p {
    margin: 0 0 0 8px;
    color: #9cb5c5;
    font-size: .78rem;
}

.linux-terminal-screen,
.permission-terminal-body,
.ssh-terminal-body {
    position: relative;
    padding: 28px;
    background:
        linear-gradient(rgba(69,255,156,.025) 1px, transparent 1px),
        #030a12;
    background-size: 100% 28px;
    font-family: Consolas, Monaco, monospace;
    overflow: hidden;
}

.linux-terminal-screen::after,
.permission-terminal-body::after,
.ssh-terminal-body::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(transparent, rgba(69,255,156,.035), transparent);
    transform: translateY(-100%);
    animation: linuxTerminalScan 5s linear infinite;
}

.linux-terminal-screen p,
.permission-terminal-body p,
.ssh-terminal-body p {
    position: relative;
    z-index: 1;
    color: #c7eaf6;
    line-height: 1.75;
}

.linux-prompt,
.terminal-command {
    color: var(--linux-green);
}

.linux-terminal-screen strong,
.terminal-verified {
    color: var(--linux-green);
}

.linux-terminal-success {
    color: var(--linux-green) !important;
}

.linux-status {
    position: absolute;
    right: 4%;
    bottom: 9%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 15px;
    border: 1px solid rgba(69,255,156,.34);
    border-radius: 999px;
    color: #d9ffec;
    background: rgba(6,40,28,.88);
    box-shadow: 0 0 20px rgba(69,255,156,.12);
    font-size: .72rem;
    font-weight: 900;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.linux-status-dot,
.firewall-live-dot,
.monitor-live-dot,
.framework-status span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--linux-green);
    box-shadow: 0 0 0 0 rgba(69,255,156,.72);
    animation: linuxStatusPulse 1.7s ease-out infinite;
}

/* =========================================================
   SECTIONS
   ========================================================= */

.linux-section {
    position: relative;
    z-index: 1;
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 96px 0;
}

.linux-section + .linux-section {
    border-top: 1px solid rgba(78,234,255,.07);
}

.section-heading {
    display: flex;
    align-items: center;
    gap: 18px;
    max-width: 900px;
}

.section-number {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border: 1px solid rgba(69,255,156,.34);
    border-radius: 50%;
    color: var(--linux-green);
    background: rgba(69,255,156,.05);
    box-shadow: 0 0 18px rgba(69,255,156,.1);
    font-size: .76rem;
    font-weight: 900;
}

.section-eyebrow {
    margin: 0 0 7px;
    color: var(--linux-green);
    font-size: .76rem;
    font-weight: 900;
    letter-spacing: .15em;
    text-transform: uppercase;
}

.section-heading h2,
.linux-career-content h2,
.linux-summary-content h2 {
    margin: 0;
    font-size: clamp(2rem, 4.2vw, 3.3rem);
    line-height: 1.08;
    letter-spacing: -.04em;
    background: linear-gradient(90deg, #fff, #7ee9ff 56%, #67ffc1);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.section-description {
    max-width: 900px;
    margin: 24px 0 45px;
    color: var(--linux-muted);
    font-size: 1.03rem;
    line-height: 1.8;
}

/* =========================================================
   SHARED CARDS
   ========================================================= */

.linux-info-card,
.importance-card,
.permission-feature,
.permission-type-card,
.privilege-card,
.least-privilege-alert,
.linux-threat-card,
.hardening-item,
.ssh-practice,
.firewall-card,
.firewall-status-panel,
.log-card,
.security-framework-card,
.linux-tool-card,
.linux-command-card,
.linux-practice-item,
.linux-career-content {
    border: 1px solid var(--linux-border);
    background:
        linear-gradient(145deg, rgba(11,31,53,.84), rgba(4,14,27,.92));
    box-shadow: var(--linux-shadow);
    backdrop-filter: blur(10px);
}

.linux-info-card,
.importance-card,
.permission-feature,
.permission-type-card,
.privilege-card,
.linux-threat-card,
.hardening-item,
.ssh-practice,
.firewall-card,
.log-card,
.security-framework-card,
.linux-tool-card,
.linux-command-card,
.linux-practice-item {
    transition:
        transform .28s ease,
        border-color .28s ease,
        box-shadow .28s ease,
        background .28s ease;
}

.linux-info-card:hover,
.importance-card:hover,
.permission-feature:hover,
.permission-type-card:hover,
.privilege-card:hover,
.linux-threat-card:hover,
.hardening-item:hover,
.ssh-practice:hover,
.firewall-card:hover,
.log-card:hover,
.security-framework-card:hover,
.linux-tool-card:hover,
.linux-command-card:hover,
.linux-practice-item:hover {
    transform: translateY(-7px);
    border-color: rgba(69,255,156,.48);
    background:
        linear-gradient(145deg, rgba(12,41,64,.94), rgba(4,17,32,.96));
    box-shadow:
        0 0 34px rgba(0,191,255,.15),
        0 14px 38px rgba(0,0,0,.28);
}

/* =========================================================
   INTRO AND IMPORTANCE
   ========================================================= */

.linux-intro-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.linux-info-card {
    min-height: 280px;
    padding: 29px;
    border-radius: 16px;
}

.card-icon,
.importance-icon,
.threat-icon,
.tool-icon,
.firewall-icon {
    font-size: 2.2rem;
    filter: drop-shadow(0 0 10px rgba(0,191,255,.28));
}

.linux-info-card h3,
.importance-card h3,
.permission-feature h3,
.permission-type-card h3,
.privilege-card h3,
.linux-threat-card h3,
.hardening-item h3,
.ssh-practice h3,
.firewall-card h3,
.log-card h3,
.security-framework-card h3,
.linux-tool-card h3,
.linux-command-card h3,
.linux-practice-item h3 {
    margin: 19px 0 10px;
    font-size: 1.16rem;
}

.linux-info-card p,
.importance-card p,
.permission-feature p,
.permission-type-card p,
.privilege-card p,
.linux-threat-card p,
.hardening-item p,
.ssh-practice p,
.firewall-card p,
.log-card p,
.security-framework-card p,
.linux-tool-card p,
.linux-command-card p,
.linux-practice-item p {
    margin: 0;
    color: var(--linux-muted);
    line-height: 1.72;
}

.linux-importance-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.importance-card {
    position: relative;
    min-height: 300px;
    padding: 27px;
    border-radius: 15px;
    overflow: hidden;
}

.importance-number,
.threat-number,
.hardening-number,
.practice-number {
    position: absolute;
    right: 16px;
    top: 13px;
    color: rgba(92,231,255,.22);
    font-size: 2rem;
    font-weight: 900;
}

/* =========================================================
   PERMISSIONS
   ========================================================= */

.permission-layout,
.ssh-layout {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 44px;
    align-items: center;
}

.permission-content,
.ssh-practices {
    display: grid;
    gap: 15px;
}

.permission-feature,
.ssh-practice {
    display: flex;
    gap: 16px;
    padding: 20px;
    border-radius: 12px;
}

.permission-icon,
.ssh-practice > span,
.secure-coding-item > span,
.linux-practice-item > span {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border: 1px solid rgba(69,255,156,.34);
    border-radius: 50%;
    color: var(--linux-green);
    font-size: .75rem;
    font-weight: 900;
}

.permission-terminal,
.ssh-terminal {
    border-radius: 16px;
    overflow: hidden;
}

.permission-output {
    color: var(--linux-cyan) !important;
}

.permission-breakdown {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 22px 0;
}

.permission-breakdown > div {
    padding: 13px;
    border: 1px solid rgba(78,234,255,.12);
    border-radius: 9px;
    text-align: center;
    background: rgba(0,0,0,.14);
}

.permission-breakdown strong,
.permission-breakdown span {
    display: block;
}

.permission-breakdown strong {
    color: var(--linux-green);
}

.permission-breakdown span {
    margin-top: 5px;
    color: var(--linux-muted);
    font-size: .72rem;
}

.permission-types-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 28px;
}

.permission-type-card {
    padding: 25px;
    border-radius: 14px;
    text-align: center;
}

.permission-type-card > span {
    width: 50px;
    height: 50px;
    margin: 0 auto;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #00150c;
    background: linear-gradient(135deg, var(--linux-cyan), var(--linux-green));
    font-size: 1.25rem;
    font-weight: 900;
}

/* =========================================================
   PRIVILEGE
   ========================================================= */

.privilege-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.privilege-card {
    min-height: 430px;
    padding: 28px;
    border-radius: 16px;
}

.root-card {
    border-color: rgba(255,101,127,.28);
}

.sudo-card {
    border-color: rgba(69,255,156,.28);
}

.privilege-header {
    display: flex;
    align-items: center;
    gap: 15px;
}

.privilege-icon {
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(78,234,255,.22);
    border-radius: 14px;
    color: var(--linux-cyan);
    background: rgba(0,191,255,.06);
    font-family: Consolas, monospace;
    font-size: 1.2rem;
    font-weight: 900;
}

.privilege-label {
    color: var(--linux-green);
    font-size: .7rem;
    font-weight: 900;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.privilege-header h3 {
    margin: 4px 0 0;
}

.privilege-card ul,
.security-framework-card ul {
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}

.privilege-card li,
.security-framework-card li {
    position: relative;
    padding-left: 22px;
    color: var(--linux-muted);
    line-height: 1.55;
}

.privilege-card li::before,
.security-framework-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--linux-green);
}

.least-privilege-alert {
    display: flex;
    gap: 18px;
    margin-top: 24px;
    padding: 22px;
    border-left: 3px solid var(--linux-yellow);
    border-radius: 0 12px 12px 0;
    background: rgba(255,209,102,.05);
}

.alert-symbol {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border-radius: 50%;
    color: #180d00;
    background: var(--linux-yellow);
    font-weight: 900;
    box-shadow: 0 0 0 0 rgba(255,209,102,.7);
    animation: linuxAlertPulse 1.9s ease-out infinite;
}

.least-privilege-alert h3 {
    margin: 0 0 8px;
}

.least-privilege-alert p {
    margin: 0;
    color: var(--linux-muted);
    line-height: 1.7;
}

/* =========================================================
   THREATS AND HARDENING
   ========================================================= */

.linux-threat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.linux-threat-card {
    position: relative;
    min-height: 300px;
    padding: 26px;
    border-radius: 15px;
    overflow: hidden;
}

.linux-threat-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 2px;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, var(--linux-red), transparent);
    animation: linuxCardScan 4.8s linear infinite;
}

.hardening-list,
.linux-practice-list {
    display: grid;
    gap: 15px;
    max-width: 1000px;
}

.hardening-item,
.linux-practice-item {
    position: relative;
    display: flex;
    gap: 18px;
    padding: 22px;
    border-radius: 13px;
}

.hardening-number,
.practice-number {
    position: static;
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border: 1px solid rgba(69,255,156,.34);
    border-radius: 50%;
    color: var(--linux-green);
    font-size: .72rem;
}

/* =========================================================
   SSH
   ========================================================= */

.ssh-terminal-body span {
    color: #7f94a2;
}

.ssh-practice h3 {
    margin-top: 0;
}

/* =========================================================
   FIREWALL
   ========================================================= */

.firewall-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.firewall-card {
    min-height: 360px;
    padding: 27px;
    border-radius: 15px;
}

.firewall-command {
    display: inline-block;
    margin-top: 14px;
    padding: 6px 10px;
    border: 1px solid rgba(69,255,156,.28);
    border-radius: 999px;
    color: var(--linux-green);
    background: rgba(69,255,156,.05);
    font-family: Consolas, monospace;
    font-size: .72rem;
}

.command-box {
    margin-top: 22px;
    padding: 13px;
    border: 1px solid rgba(78,234,255,.16);
    border-radius: 9px;
    color: var(--linux-cyan);
    background: #030a12;
    font-family: Consolas, Monaco, monospace;
    overflow-x: auto;
}

.firewall-status-panel {
    margin-top: 26px;
    padding: 27px;
    border-radius: 16px;
}

.firewall-status-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.firewall-status-header h3 {
    margin: 0;
}

.firewall-status-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-top: 22px;
}

.firewall-status-grid > div {
    padding: 16px;
    border: 1px solid rgba(78,234,255,.12);
    border-radius: 10px;
    background: rgba(0,0,0,.13);
}

.firewall-status-grid span,
.firewall-status-grid strong {
    display: block;
}

.firewall-status-grid span {
    color: var(--linux-muted);
    font-size: .75rem;
}

.firewall-status-grid strong {
    margin-top: 7px;
}

.status-blocked { color: var(--linux-red); }
.status-allowed { color: var(--linux-green); }
.status-monitored { color: var(--linux-yellow); }

/* =========================================================
   LOGGING AND MONITORING
   ========================================================= */

.logging-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.log-card {
    min-height: 250px;
    padding: 25px;
    border-radius: 14px;
}

.log-path {
    display: inline-block;
    padding: 7px 10px;
    border: 1px solid rgba(78,234,255,.22);
    border-radius: 8px;
    color: var(--linux-cyan);
    background: rgba(0,191,255,.05);
    font-family: Consolas, monospace;
    font-size: .75rem;
}

.monitor-console {
    margin-top: 28px;
    border-radius: 16px;
    overflow: hidden;
}

.monitor-console-header {
    justify-content: space-between;
}

.monitor-console-header > div {
    display: flex;
    align-items: center;
    gap: 9px;
    color: #d2f6ff;
    font-weight: 800;
}

.monitor-console-header > span {
    color: var(--linux-green);
    font-size: .7rem;
    font-weight: 900;
}

.monitor-events {
    padding: 18px;
    background:
        linear-gradient(rgba(69,255,156,.025) 1px, transparent 1px),
        #030a12;
    background-size: 100% 29px;
}

.monitor-event {
    display: grid;
    grid-template-columns: 90px 90px 1fr;
    gap: 14px;
    align-items: center;
    padding: 14px;
    border-bottom: 1px solid rgba(78,234,255,.08);
    animation: linuxMonitorReveal .65s ease both;
}

.monitor-event:nth-child(2) { animation-delay: .15s; }
.monitor-event:nth-child(3) { animation-delay: .3s; }
.monitor-event:nth-child(4) { animation-delay: .45s; }

.event-time {
    color: #7f96a5;
    font-family: Consolas, monospace;
    font-size: .8rem;
}

.event-success,
.event-warning,
.event-blocked {
    font-size: .68rem;
    font-weight: 900;
}

.event-success { color: var(--linux-green); }
.event-warning { color: var(--linux-yellow); }
.event-blocked { color: var(--linux-red); }

.monitor-event p {
    margin: 0;
    color: var(--linux-muted);
}

/* =========================================================
   SECURITY FRAMEWORKS
   ========================================================= */

.security-framework-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.security-framework-card {
    min-height: 430px;
    padding: 28px;
    border-radius: 16px;
}

.framework-header {
    display: flex;
    align-items: center;
    gap: 15px;
}

.framework-code {
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(69,255,156,.3);
    border-radius: 14px;
    color: var(--linux-green);
    background: rgba(69,255,156,.05);
    font-size: .78rem;
    font-weight: 900;
}

.framework-header p,
.framework-header h3 {
    margin: 0;
}

.framework-header p {
    color: var(--linux-green);
    font-size: .7rem;
    font-weight: 900;
    text-transform: uppercase;
}

.framework-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    padding: 14px;
    border: 1px solid rgba(69,255,156,.24);
    border-radius: 10px;
    color: var(--linux-green);
    background: rgba(69,255,156,.05);
}

/* =========================================================
   TOOLS AND COMMANDS
   ========================================================= */

.linux-tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.linux-tool-card {
    min-height: 255px;
    padding: 25px;
    border-radius: 14px;
}

.command-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.linux-command-card {
    padding: 23px;
    border-radius: 14px;
}

.command-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.command-header span {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(69,255,156,.3);
    border-radius: 50%;
    color: var(--linux-green);
    font-size: .7rem;
    font-weight: 900;
}

.command-header h3 {
    margin: 0;
}

.linux-command-card code {
    display: block;
    margin: 18px 0;
    padding: 13px;
    border: 1px solid rgba(78,234,255,.14);
    border-radius: 9px;
    color: var(--linux-cyan);
    background: #030a12;
    font-family: Consolas, Monaco, monospace;
    overflow-x: auto;
}

/* =========================================================
   CAREERS
   ========================================================= */

.linux-career-section {
    width: 100%;
    max-width: none;
    padding-left: max(20px, calc((100vw - 1180px) / 2));
    padding-right: max(20px, calc((100vw - 1180px) / 2));
    background:
        radial-gradient(circle at 74% 50%, rgba(143,125,255,.07), transparent 30%);
}

.linux-career-content {
    padding: 38px;
    border-radius: 18px;
}

.linux-career-content > div:first-child > p:last-child {
    color: var(--linux-muted);
    line-height: 1.8;
}

.linux-career-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-top: 30px;
}

.linux-career-grid span {
    padding: 15px;
    border: 1px solid rgba(78,234,255,.14);
    border-radius: 10px;
    color: #d5f4ff;
    background: rgba(0,0,0,.14);
    text-align: center;
    transition: transform .25s ease, border-color .25s ease;
}

.linux-career-grid span:hover {
    transform: translateY(-4px);
    border-color: rgba(69,255,156,.42);
}

/* =========================================================
   SUMMARY
   ========================================================= */

.linux-summary-section {
    min-height: 560px;
    padding: 110px max(24px, calc((100vw - 950px) / 2));
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 36px;
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 50%, rgba(0,191,255,.12), transparent 38%),
        linear-gradient(180deg, rgba(4,13,25,.8), #02070f);
}

.linux-summary-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(69,255,156,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,191,255,.055) 1px, transparent 1px);
    background-size: 38px 38px;
    transform: perspective(700px) rotateX(67deg) scale(1.6) translateY(31%);
    transform-origin: bottom;
    animation: linuxHeroGrid 12s linear infinite;
}

.linux-summary-icon {
    position: relative;
    z-index: 2;
    width: 120px;
    height: 120px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(69,255,156,.38);
    border-radius: 50%;
    background: rgba(69,255,156,.06);
    box-shadow: 0 0 30px rgba(69,255,156,.12);
    font-size: 3.5rem;
    animation: linuxPenguinFloat 4s ease-in-out infinite;
}

.linux-summary-content {
    position: relative;
    z-index: 2;
}

.linux-summary-content > p:not(.section-eyebrow) {
    max-width: 760px;
    color: var(--linux-muted);
    line-height: 1.8;
}

.linux-back-to-top-btn {
    margin-top: 24px;
}

/* =========================================================
   ANIMATIONS
   ========================================================= */

@keyframes linuxGridMove {
    from { background-position: 0 0, 0 0; }
    to { background-position: 44px 44px, 44px 44px; }
}

@keyframes linuxBackgroundSweep {
    from { transform: translate3d(-7%, -7%, 0) rotate(0deg); }
    to { transform: translate3d(7%, 7%, 0) rotate(3deg); }
}

@keyframes linuxHeroGrid {
    from { background-position: 0 0, 0 0; }
    to { background-position: 0 54px, 54px 0; }
}

@keyframes linuxFadeUp {
    from { opacity: 0; transform: translateY(28px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes linuxFadeIn {
    from { opacity: 0; transform: scale(.94); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes linuxTerminalFloat {
    0%,100% { transform: translateY(0) rotate(-.3deg); }
    50% { transform: translateY(-14px) rotate(.3deg); }
}

@keyframes linuxTerminalScan {
    from { transform: translateY(-100%); }
    to { transform: translateY(100%); }
}

@keyframes linuxStatusPulse {
    0% { box-shadow: 0 0 0 0 rgba(69,255,156,.72); }
    70% { box-shadow: 0 0 0 10px rgba(69,255,156,0); }
    100% { box-shadow: 0 0 0 0 rgba(69,255,156,0); }
}

@keyframes linuxAlertPulse {
    0% { box-shadow: 0 0 0 0 rgba(255,209,102,.72); }
    70% { box-shadow: 0 0 0 12px rgba(255,209,102,0); }
    100% { box-shadow: 0 0 0 0 rgba(255,209,102,0); }
}

@keyframes linuxCardScan {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
}

@keyframes linuxMonitorReveal {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes linuxPenguinFloat {
    0%,100% { transform: translateY(0) rotate(-3deg); }
    50% { transform: translateY(-12px) rotate(3deg); }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 1100px) {
    .linux-hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .linux-hero-content {
        margin: 0 auto;
    }

    .linux-hero-buttons {
        justify-content: center;
    }

    .linux-importance-grid,
    .linux-threat-grid,
    .logging-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .linux-tools-grid,
    .linux-career-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .permission-layout,
    .ssh-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 820px) {
    .linux-section {
        width: min(100% - 28px, 1180px);
        padding: 76px 0;
    }

    .linux-hero {
        min-height: auto;
        padding: 90px 18px 72px;
        gap: 40px;
    }

    .linux-hero h1 {
        font-size: clamp(3.1rem, 16vw, 5rem);
    }

    .linux-hero-buttons {
        flex-direction: column;
    }

    .linux-primary-btn,
    .linux-secondary-btn {
        width: 100%;
    }

    .linux-intro-grid,
    .linux-importance-grid,
    .linux-threat-grid,
    .firewall-grid,
    .logging-grid,
    .linux-tools-grid,
    .command-grid,
    .linux-career-grid,
    .privilege-grid,
    .security-framework-grid {
        grid-template-columns: 1fr;
    }

    .firewall-status-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .linux-summary-section {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .linux-summary-icon {
        margin: 0 auto;
    }

    .linux-summary-content > p:not(.section-eyebrow) {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 540px) {
    .section-heading {
        align-items: flex-start;
    }

    .section-number {
        width: 46px;
        height: 46px;
    }

    .permission-types-grid,
    .firewall-status-grid {
        grid-template-columns: 1fr;
    }

    .monitor-event {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .linux-terminal-screen,
    .permission-terminal-body,
    .ssh-terminal-body {
        padding: 20px;
        font-size: .84rem;
    }

    .linux-career-content {
        padding: 24px;
    }

    .linux-summary-section {
        padding-left: 18px;
        padding-right: 18px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .linux-security-page *,
    .linux-security-page *::before,
    .linux-security-page *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
    }
}