/* Login page — network / server themed animated background */

@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@400;600;700&display=swap');

.login-page {
    font-family: 'Exo 2', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
}

.login-page .auth-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    background: transparent;
    padding: 1.5rem;
}

/* —— Animated background layer —— */
.login-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    background: linear-gradient(135deg, #0b1220 0%, #0d2137 35%, #102a43 70%, #0a1628 100%);
    overflow: hidden;
}

.login-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    animation: gridDrift 40s linear infinite;
}

.login-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(34, 211, 238, 0.12), transparent 55%),
                radial-gradient(ellipse 60% 50% at 100% 100%, rgba(67, 97, 238, 0.15), transparent 50%);
    pointer-events: none;
}

@keyframes gridDrift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(48px, 48px); }
}

/* Floating server / network nodes */
.server-nodes {
    position: absolute;
    inset: 0;
    margin: 0;
    padding: 0;
    list-style: none;
    overflow: hidden;
}

.server-nodes li {
    position: absolute;
    display: block;
    bottom: -120px;
    background: rgba(56, 189, 248, 0.15);
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 4px;
    box-shadow: 0 0 20px rgba(34, 211, 238, 0.1);
    animation: nodeRise linear infinite;
}

.server-nodes li::before,
.server-nodes li::after {
    content: '';
    position: absolute;
    left: 4px;
    right: 4px;
    height: 2px;
    background: rgba(34, 211, 238, 0.4);
    border-radius: 1px;
}

.server-nodes li::before { top: 6px; }
.server-nodes li::after { top: 12px; width: 60%; }

.server-nodes li:nth-child(1) {
    left: 8%;
    width: 28px;
    height: 36px;
    animation-duration: 22s;
    animation-delay: 0s;
}

.server-nodes li:nth-child(2) {
    left: 22%;
    width: 14px;
    height: 18px;
    animation-duration: 14s;
    animation-delay: 2s;
}

.server-nodes li:nth-child(3) {
    left: 38%;
    width: 40px;
    height: 52px;
    animation-duration: 26s;
    animation-delay: 1s;
    background: rgba(67, 97, 238, 0.12);
    border-color: rgba(99, 102, 241, 0.3);
}

.server-nodes li:nth-child(4) {
    left: 55%;
    width: 18px;
    height: 24px;
    animation-duration: 18s;
    animation-delay: 4s;
}

.server-nodes li:nth-child(5) {
    left: 68%;
    width: 32px;
    height: 42px;
    animation-duration: 20s;
    animation-delay: 0.5s;
}

.server-nodes li:nth-child(6) {
    left: 82%;
    width: 48px;
    height: 64px;
    animation-duration: 28s;
    animation-delay: 3s;
}

.server-nodes li:nth-child(7) {
    left: 12%;
    width: 56px;
    height: 72px;
    animation-duration: 32s;
    animation-delay: 6s;
}

.server-nodes li:nth-child(8) {
    left: 45%;
    width: 12px;
    height: 16px;
    animation-duration: 16s;
    animation-delay: 8s;
}

.server-nodes li:nth-child(9) {
    left: 72%;
    width: 22px;
    height: 28px;
    animation-duration: 24s;
    animation-delay: 5s;
}

.server-nodes li:nth-child(10) {
    left: 90%;
    width: 36px;
    height: 48px;
    animation-duration: 19s;
    animation-delay: 1.5s;
}

@keyframes nodeRise {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.85;
    }
    100% {
        transform: translateY(-110vh) rotate(8deg);
        opacity: 0;
    }
}

/* Data packets (small dots traveling along paths) */
.data-packets {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.data-packets span {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #22d3ee;
    box-shadow: 0 0 12px #22d3ee, 0 0 24px rgba(34, 211, 238, 0.5);
    animation: packetTravel 4s ease-in-out infinite;
}

.data-packets span:nth-child(1) { top: 20%; left: 15%; animation-delay: 0s; }
.data-packets span:nth-child(2) { top: 35%; left: 45%; animation-delay: 0.8s; animation-duration: 5s; }
.data-packets span:nth-child(3) { top: 55%; left: 75%; animation-delay: 1.6s; }
.data-packets span:nth-child(4) { top: 70%; left: 25%; animation-delay: 2.2s; animation-duration: 3.5s; }
.data-packets span:nth-child(5) { top: 15%; left: 85%; animation-delay: 0.4s; animation-duration: 6s; }
.data-packets span:nth-child(6) { top: 80%; left: 60%; animation-delay: 1.2s; }

@keyframes packetTravel {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translate(80px, -40px) scale(1.2);
        opacity: 1;
    }
    50% {
        transform: translate(160px, 20px) scale(1);
        opacity: 0.6;
    }
    75% {
        transform: translate(240px, -30px) scale(1.1);
        opacity: 1;
    }
}

/* SVG network topology */
.network-topology {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.35;
}

.network-topology .link {
    fill: none;
    stroke: rgba(34, 211, 238, 0.35);
    stroke-width: 1;
    stroke-dasharray: 8 12;
    animation: linkFlow 3s linear infinite;
}

.network-topology .hub {
    fill: rgba(34, 211, 238, 0.5);
    animation: hubPulse 2.5s ease-in-out infinite;
}

.network-topology .hub-server {
    fill: rgba(99, 102, 241, 0.6);
    animation: hubPulse 2.5s ease-in-out infinite 0.5s;
}

@keyframes linkFlow {
    to { stroke-dashoffset: -40; }
}

@keyframes hubPulse {
    0%, 100% { opacity: 0.5; r: 4; }
    50% { opacity: 1; }
}

/* Scan line accent */
.login-scanline {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.4), transparent);
    animation: scanline 8s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes scanline {
    0% { top: -2px; opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { top: 100%; opacity: 0; }
}

/* —— Auth card (glass + entrance) —— */
.login-page .auth-card {
    position: relative;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 16px;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(34, 211, 238, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    padding: 2.25rem;
    max-width: 440px;
    animation: cardEnter 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    opacity: 0;
    transform: translateY(24px) scale(0.98);
    transition: box-shadow 0.4s ease, transform 0.3s ease;
}

.login-page .auth-card:hover {
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.3),
        0 0 40px rgba(34, 211, 238, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

@keyframes cardEnter {
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-page .auth-header {
    animation: fadeSlide 0.6s ease 0.2s both;
}

/* Logo — entrance, float, glow ring */
.login-page .logo-wrap {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: fit-content;
    margin-inline: auto;
    margin-bottom: 0.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.login-page .logo-wrap::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: min(160px, 90vw);
    height: min(160px, 90vw);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.22) 0%, rgba(67, 97, 238, 0.08) 45%, transparent 70%);
    animation: logoRingPulse 3.5s ease-in-out infinite;
    pointer-events: none;
}

.login-page .logo-wrap::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 20px;
    background: linear-gradient(
        120deg,
        transparent 30%,
        rgba(255, 255, 255, 0.55) 50%,
        transparent 70%
    );
    background-size: 200% 100%;
    animation: logoShimmer 4s ease-in-out infinite;
    pointer-events: none;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    padding: 2px;
    opacity: 0.35;
}

.login-page .auth-header .brand-logo {
    position: relative;
    z-index: 1;
    max-width: 140px;
    animation:
        logoPop 0.85s cubic-bezier(0.34, 1.56, 0.64, 1) 0.15s both,
        logoFloat 4.5s ease-in-out 1s infinite,
        logoGlow 3s ease-in-out 1s infinite;
    transition: filter 0.3s ease;
    pointer-events: none;
}

/* Hover — wiggle, lift, brighter glow & ring */
.login-page .logo-wrap:hover .brand-logo {
    animation: logoHoverWiggle 0.65s ease-in-out infinite;
    filter: drop-shadow(0 12px 32px rgba(34, 211, 238, 0.55))
            drop-shadow(0 0 20px rgba(67, 97, 238, 0.35));
}

.login-page .logo-wrap:hover::before {
    animation: logoRingHover 1.1s ease-in-out infinite;
    background: radial-gradient(
        circle,
        rgba(34, 211, 238, 0.38) 0%,
        rgba(67, 97, 238, 0.15) 45%,
        transparent 72%
    );
}

.login-page .logo-wrap:hover::after {
    animation: logoShimmerFast 1.2s linear infinite;
    opacity: 0.65;
}

@keyframes logoHoverWiggle {
    0%, 100% {
        transform: scale(1.1) rotate(-4deg) translateY(-2px);
    }
    25% {
        transform: scale(1.14) rotate(4deg) translateY(-6px);
    }
    50% {
        transform: scale(1.12) rotate(-3deg) translateY(-4px);
    }
    75% {
        transform: scale(1.15) rotate(3deg) translateY(-7px);
    }
}

@keyframes logoRingHover {
    0%, 100% {
        opacity: 0.85;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.18);
    }
}

@keyframes logoShimmerFast {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

@keyframes logoPop {
    0% {
        opacity: 0;
        transform: scale(0.6) rotate(-8deg);
    }
    70% {
        transform: scale(1.06) rotate(2deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0) scale(1) rotate(0deg);
    }
    50% {
        transform: translateY(-8px) scale(1.02) rotate(0deg);
    }
}

@keyframes logoGlow {
    0%, 100% {
        filter: drop-shadow(0 4px 14px rgba(8, 145, 178, 0.25));
    }
    50% {
        filter: drop-shadow(0 8px 22px rgba(34, 211, 238, 0.45));
    }
}

@keyframes logoRingPulse {
    0%, 100% {
        opacity: 0.45;
        transform: translate(-50%, -50%) scale(0.92);
    }
    50% {
        opacity: 0.9;
        transform: translate(-50%, -50%) scale(1.08);
    }
}

@keyframes logoShimmer {
    0% {
        background-position: 200% 0;
        opacity: 0.2;
    }
    50% {
        opacity: 0.45;
    }
    100% {
        background-position: -200% 0;
        opacity: 0.2;
    }
}

@keyframes fadeSlide {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-page .auth-header h2 {
    color: #0f172a;
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.35;
    margin-top: 0.75rem;
}

.login-page .auth-header p {
    color: #64748b;
    margin-top: 0.35rem;
    font-size: 0.95rem;
}

.login-page .form-group {
    animation: fadeSlide 0.5s ease both;
}

.login-page #loginForm .form-group:nth-of-type(1) { animation-delay: 0.35s; }
.login-page #loginForm .form-group:nth-of-type(2) { animation-delay: 0.45s; }
.login-page #loginForm button[type="submit"] {
    animation: fadeSlide 0.5s ease 0.55s both;
}

.login-page .form-control {
    border-radius: 8px;
    border-color: #e2e8f0;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease;
}

.login-page .form-control:focus {
    border-color: #0891b2;
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
    transform: translateY(-1px);
}

.login-page .btn {
    border-radius: 8px;
    background: linear-gradient(135deg, #0891b2, #4361ee);
    transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.3s ease;
    position: relative;
    overflow: hidden;
}

.login-page .btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.2) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.login-page .btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(8, 145, 178, 0.35);
}

.login-page .btn:hover:not(:disabled)::after {
    transform: translateX(100%);
}

.login-page .btn:active:not(:disabled) {
    transform: translateY(0);
}

.login-page .btn:disabled {
    opacity: 0.75;
    cursor: wait;
}

.login-page .text-center.mt-3 {
    animation: fadeSlide 0.5s ease 0.65s both;
}

.login-page .text-center a {
    color: #0891b2;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.login-page .text-center a:hover {
    color: #4361ee;
}

/* Form switch (login ↔ 2FA) */
.login-page .auth-form-panel {
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.login-page .auth-form-panel.is-hidden {
    display: none !important;
    opacity: 0;
    transform: translateX(12px);
    pointer-events: none;
}

.login-page .auth-form-panel.is-visible {
    display: block;
    animation: panelIn 0.4s ease forwards;
}

@keyframes panelIn {
    from {
        opacity: 0;
        transform: translateX(-12px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.login-page #login-error.error-message {
    color: #dc2626;
    border-radius: 8px;
    padding: 0.65rem 0.85rem;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.25);
    animation: shake 0.45s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

@media (prefers-reduced-motion: reduce) {
    .login-bg::before,
    .server-nodes li,
    .data-packets span,
    .network-topology .link,
    .network-topology .hub,
    .network-topology .hub-server,
    .login-scanline,
    .login-page .logo-wrap::before,
    .login-page .logo-wrap::after,
    .login-page .auth-header .brand-logo,
    .login-page .logo-wrap:hover .brand-logo,
    .login-page .logo-wrap:hover::before,
    .login-page .logo-wrap:hover::after {
        animation: none !important;
    }

    .login-page .logo-wrap:hover .brand-logo {
        transform: scale(1.05);
    }

    .login-page .auth-card,
    .login-page .auth-header,
    .login-page .form-group,
    .login-page .text-center.mt-3 {
        animation: none !important;
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 480px) {
    .login-page .auth-card {
        padding: 1.5rem;
    }

    .login-page .auth-header h2 {
        font-size: 1.15rem;
    }
}