/* ===== CSS Variables ===== */
:root {
    /* Core colors matching the background */
    --color-bg-deep: #0a0e1a;
    --color-bg-dark: #0d1426;
    --color-primary: #00f0ff;
    --color-primary-dim: rgba(0, 240, 255, 0.6);
    --color-primary-glow: rgba(0, 240, 255, 0.3);
    --color-secondary: #1e90ff;
    --color-accent: #7b2dff;
    
    /* Text colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.4);
    
    /* Glass effect */
    --glass-bg: rgba(13, 20, 38, 0.4);
    --glass-border: rgba(0, 240, 255, 0.15);
    --glass-highlight: rgba(0, 240, 255, 0.05);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Tajawal', 'Rajdhani', sans-serif;
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-deep);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Background ===== */
.background-container {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: url('img/bg.jpeg?v=2') center center / cover no-repeat;
}

.bg-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 14, 26, 0.1) 0%,
        rgba(10, 14, 26, 0.15) 35%,
        rgba(10, 14, 26, 0.5) 60%,
        rgba(10, 14, 26, 0.8) 100%
    );
}

/* ===== Login Container ===== */
.login-container {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    position: relative;
}

/* ===== Login Card ===== */
.login-card {
    width: 100%;
    max-width: 380px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    animation: cardReveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    transform: translateY(20px);
}

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

/* Inner glow effect */
.login-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse at 50% 0%,
        var(--glass-highlight) 0%,
        transparent 60%
    );
    pointer-events: none;
}

/* Corner accents */
.corner {
    position: absolute;
    width: 20px;
    height: 20px;
    pointer-events: none;
}

.corner::before,
.corner::after {
    content: '';
    position: absolute;
    background: var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary-glow);
}

.corner-tl { top: 0; left: 0; }
.corner-tr { top: 0; right: 0; }
.corner-bl { bottom: 0; left: 0; }
.corner-br { bottom: 0; right: 0; }

.corner-tl::before,
.corner-tr::before,
.corner-bl::before,
.corner-br::before {
    width: 2px;
    height: 16px;
}

.corner-tl::after,
.corner-tr::after,
.corner-bl::after,
.corner-br::after {
    width: 16px;
    height: 2px;
}

.corner-tl::before, .corner-tl::after { top: 0; left: 0; }
.corner-tr::before, .corner-tr::after { top: 0; right: 0; }
.corner-bl::before, .corner-bl::after { bottom: 0; left: 0; }
.corner-br::before, .corner-br::after { bottom: 0; right: 0; }

/* ===== Header ===== */
.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: headerFade 0.6s 0.2s ease forwards;
    opacity: 0;
}

@keyframes headerFade {
    to { opacity: 1; }
}

.logo-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-primary);
    filter: drop-shadow(0 0 8px var(--color-primary-glow));
    animation: iconPulse 3s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { filter: drop-shadow(0 0 8px var(--color-primary-glow)); }
    50% { filter: drop-shadow(0 0 16px var(--color-primary-dim)); }
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-text-primary);
    text-shadow: 0 0 20px var(--color-primary-glow);
    margin-bottom: var(--spacing-xs);
}

.logo-subtitle {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

/* ===== Form ===== */
.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Input Group */
.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    animation: inputSlide 0.5s ease forwards;
    opacity: 0;
    transform: translateX(-10px);
}

.input-group:nth-child(1) { animation-delay: 0.3s; }
.input-group:nth-child(2) { animation-delay: 0.4s; }

@keyframes inputSlide {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.input-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-primary-dim);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    right: var(--spacing-md);
    width: 18px;
    height: 18px;
    color: var(--color-text-muted);
    pointer-events: none;
    transition: color var(--transition-normal);
}

.input-wrapper input {
    width: 100%;
    height: 52px;
    padding: 0 calc(var(--spacing-md) + 30px) 0 var(--spacing-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-primary);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition-normal);
    text-align: right;
}

.input-wrapper input::placeholder {
    color: var(--color-text-muted);
    font-weight: 400;
}

.input-wrapper input:focus {
    border-color: var(--color-primary-dim);
    background: rgba(0, 240, 255, 0.05);
}

.input-wrapper input:focus ~ .input-glow {
    opacity: 1;
}

.input-wrapper:has(input:focus) .input-icon {
    color: var(--color-primary);
}

/* Input glow effect */
.input-glow {
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-md);
    background: transparent;
    box-shadow: 0 0 15px var(--color-primary-glow),
                inset 0 0 15px rgba(0, 240, 255, 0.05);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

/* Password toggle */
.toggle-password {
    position: absolute;
    left: var(--spacing-md);
    width: 24px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-normal);
    padding: 0;
}

.toggle-password:hover {
    color: var(--color-primary);
}

.toggle-password svg {
    width: 18px;
    height: 18px;
}

.toggle-password .eye-closed {
    display: none;
}

.toggle-password.active .eye-open {
    display: none;
}

.toggle-password.active .eye-closed {
    display: block;
}

#password {
    padding-left: calc(var(--spacing-md) + 36px);
}

/* ===== Form Options ===== */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: optionsFade 0.5s 0.5s ease forwards;
    opacity: 0;
}

@keyframes optionsFade {
    to { opacity: 1; }
}

/* Custom checkbox */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.checkbox-wrapper input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    position: relative;
    transition: all var(--transition-normal);
    flex-shrink: 0;
}

.checkbox-wrapper input:checked + .checkmark {
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary-glow);
}

.checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 4px;
    height: 9px;
    border: solid var(--color-bg-deep);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform var(--transition-fast);
}

.checkbox-wrapper input:checked + .checkmark::after {
    transform: rotate(45deg) scale(1);
}

.checkbox-label {
    user-select: none;
}

.forgot-link {
    font-size: 0.85rem;
    color: var(--color-primary-dim);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.forgot-link:hover {
    color: var(--color-primary);
    text-shadow: 0 0 10px var(--color-primary-glow);
}

/* ===== Login Button ===== */
.login-btn {
    position: relative;
    width: 100%;
    height: 54px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
    animation: btnReveal 0.5s 0.6s ease forwards;
    opacity: 0;
    transform: translateY(10px);
}

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

.login-btn::before {
    content: '';
    position: absolute;
    inset: 2px;
    background: var(--color-bg-dark);
    border-radius: calc(var(--radius-md) - 2px);
    transition: opacity var(--transition-normal);
}

.login-btn:hover::before {
    opacity: 0.85;
}

.login-btn:active::before {
    opacity: 0.9;
}

.btn-text {
    position: relative;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-primary);
    text-shadow: 0 0 10px var(--color-primary-glow);
}

.btn-icon {
    position: relative;
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    transition: transform var(--transition-normal);
}

.btn-icon svg {
    width: 100%;
    height: 100%;
}

.login-btn:hover .btn-icon {
    transform: translateX(-4px);
}

/* Button glow */
.btn-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at center,
        var(--color-primary-glow) 0%,
        transparent 70%
    );
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.login-btn:hover .btn-glow {
    opacity: 1;
}

/* ===== Error Message ===== */
.error-message {
    background: rgba(255, 59, 48, 0.15);
    border: 1px solid rgba(255, 59, 48, 0.4);
    color: #ff6b6b;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    text-align: center;
    margin-top: var(--spacing-md);
}

.error-message.shake {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

/* ===== Footer ===== */
.login-footer {
    margin-top: var(--spacing-xl);
    animation: footerFade 0.5s 0.7s ease forwards;
    opacity: 0;
}

@keyframes footerFade {
    to { opacity: 1; }
}

.divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.divider-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}

.divider-text {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.security-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.security-notice svg {
    width: 14px;
    height: 14px;
    color: var(--color-primary-dim);
}

/* ===== Version Tag ===== */
.version-tag {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    opacity: 0.5;
}

/* ===== Responsive - Tablet & Desktop ===== */
@media (min-width: 480px) {
    .login-card {
        padding: var(--spacing-2xl);
    }
}

@media (min-width: 768px) {
    .login-container {
        padding: var(--spacing-xl);
    }
    
    .login-card {
        max-width: 420px;
        padding: var(--spacing-2xl) 3rem;
    }
    
    .corner {
        width: 24px;
        height: 24px;
    }
    
    .corner::before {
        height: 20px;
    }
    
    .corner::after {
        width: 20px;
    }
}

/* ===== Safe area for notched devices ===== */
@supports (padding: env(safe-area-inset-bottom)) {
    .login-container {
        padding-bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom));
    }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== Dark mode specific (already dark, but for system preference) ===== */
@media (prefers-color-scheme: light) {
    /* Keep dark theme regardless of system preference for this design */
    body {
        background-color: var(--color-bg-deep);
    }
}