/* ==========================================================================
   Compact Galaxy Theme - Subtle Star Tracking Only
   File: assets/css/login.css
   ========================================================================== */

:root {
    --space-bg: #05060f;
    --nebula-purple: rgba(124, 58, 237, 0.35);
    --nebula-blue: rgba(14, 165, 233, 0.3);
    --nebula-pink: rgba(236, 72, 153, 0.22);
    --star-white: #ffffff;
    --star-cyan: #38bdf8;
    --card-bg: rgba(13, 16, 33, 0.78);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-glow: rgba(99, 102, 241, 0.25);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --input-bg: rgba(255, 255, 255, 0.04);
    --input-border: rgba(255, 255, 255, 0.12);
    
    /* Subtle star offset controlled via JS */
    --star-shift-x: 0px;
    --star-shift-y: 0px;
}

/* Page Reset & Scroll Lock */
html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    box-sizing: border-box;
}

*, *::before, *::after {
    box-sizing: inherit;
}

body {
    background-color: var(--space-bg);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-image: 
        radial-gradient(circle at 50% 50%, var(--nebula-purple) 0%, transparent 60%),
        linear-gradient(180deg, #03040a 0%, #08091a 100%);
    background-attachment: fixed;
}

/* ==========================================================================
   Fixed Galaxy Nebula (মাউসের সাথে নড়বে না, কেন্দ্রে ঘুরবে)
   ========================================================================== */

body::before {
    content: "";
    position: fixed;
    top: 50%;
    left: 50%;
    width: 110vmax;
    height: 110vmax;
    transform: translate(-50%, -50%);
    background: conic-gradient(
        from 0deg at 50% 50%,
        transparent 0deg,
        var(--nebula-blue) 45deg,
        transparent 90deg,
        var(--nebula-purple) 180deg,
        transparent 225deg,
        var(--nebula-pink) 300deg,
        transparent 360deg
    );
    filter: blur(80px);
    opacity: 0.75;
    animation: rotateGalaxy 70s linear infinite;
    pointer-events: none;
    z-index: 0;
}

/* ==========================================================================
   Rotating Stars (শুধু তারাগুলো মাউসকে আলতো করে ফলো করবে)
   ========================================================================== */

body::after {
    content: "";
    position: fixed;
    top: calc(50% + var(--star-shift-y));
    left: calc(50% + var(--star-shift-x));
    width: 105vmax;
    height: 105vmax;
    background-image: 
        radial-gradient(1.2px 1.2px at 15% 25%, var(--star-white) 100%, transparent),
        radial-gradient(1.8px 1.8px at 30% 70%, var(--star-cyan) 100%, transparent),
        radial-gradient(1px 1px at 60% 15%, var(--star-white) 100%, transparent),
        radial-gradient(2px 2px at 75% 65%, #c084fc 100%, transparent),
        radial-gradient(1.2px 1.2px at 85% 35%, var(--star-white) 100%, transparent),
        radial-gradient(1.5px 1.5px at 45% 85%, var(--star-cyan) 100%, transparent),
        radial-gradient(1.8px 1.8px at 50% 50%, #f472b6 100%, transparent);
    background-size: 300px 300px, 420px 420px, 260px 260px, 480px 480px, 340px 340px, 380px 380px, 460px 460px;
    animation: rotateStars 80s linear infinite reverse;
    opacity: 0.9;
    /* মাউস সরানোর পর স্মুথভাবে সেন্টারে ফিরে আসার ট্রানজিশন */
    transition: top 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), left 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
    pointer-events: none;
    z-index: 0;
}

/* ==========================================================================
   Compact Card Design
   ========================================================================== */

.login-container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 390px;
    padding: 0 16px;
}

.login-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    padding: 22px 24px;
    box-shadow: 
        0 20px 45px -10px rgba(0, 0, 0, 0.85),
        0 0 30px -10px var(--card-glow);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.login-card:hover {
    border-color: rgba(168, 85, 247, 0.35);
    box-shadow: 0 22px 48px -10px rgba(0, 0, 0, 0.9), 0 0 35px -5px rgba(168, 85, 247, 0.35);
}

.login-header {
    text-align: center;
    margin-bottom: 16px;
}

.login-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-bottom: 6px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(168, 85, 247, 0.25));
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: #38bdf8;
}

.login-logo svg {
    width: 22px;
    height: 22px;
    filter: drop-shadow(0 0 5px rgba(56, 189, 248, 0.8));
}

.login-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0 0 3px 0;
    letter-spacing: -0.4px;
    background: linear-gradient(125deg, #ffffff 40%, #c084fc 80%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 0.82rem;
    margin: 0;
}

/* ==========================================================================
   Form Fields
   ========================================================================== */

.form-group.mb-3 {
    margin-bottom: 0.7rem !important;
}

.form-label {
    color: #cbd5e1;
    font-size: 0.78rem;
    font-weight: 500;
    margin-bottom: 4px;
    display: block;
}

.input-group-text {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-right: none;
    color: var(--text-muted);
    border-top-left-radius: 10px !important;
    border-bottom-left-radius: 10px !important;
    padding: 0.5rem 0.8rem;
}

.input-group-text svg {
    width: 17px;
    height: 17px;
}

.form-control {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-main);
    font-size: 0.88rem;
    padding: 0.5rem 0.8rem;
}

.form-control:focus {
    background-color: rgba(255, 255, 255, 0.07);
    color: #ffffff;
    border-color: #a855f7;
    box-shadow: 0 0 0 2.5px rgba(168, 85, 247, 0.22);
}

.form-control:focus + .input-group-text,
.input-group:focus-within .input-group-text {
    border-color: #a855f7;
    color: #38bdf8;
}

.toggle-password {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-left: none;
    color: var(--text-muted);
    border-top-right-radius: 10px !important;
    border-bottom-right-radius: 10px !important;
    padding: 0.5rem 0.8rem;
}

.toggle-password svg {
    width: 17px;
    height: 17px;
}

/* ==========================================================================
   Options, Button & Element Removal
   ========================================================================== */

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
    margin-top: 8px;
    margin-bottom: 14px !important;
}

.form-check-input {
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--input-border);
    cursor: pointer;
}

.form-check-input:checked {
    background-color: #8b5cf6;
    border-color: #8b5cf6;
}

.form-check-label {
    color: var(--text-muted);
    cursor: pointer;
}

.forgot-password-link {
    color: #38bdf8;
    text-decoration: none;
}

.forgot-password-link:hover {
    color: #bae6fd;
}

.login-btn {
    width: 100%;
    padding: 0.62rem 1rem;
    font-size: 0.92rem;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    color: #ffffff;
    background: linear-gradient(135deg, #0284c7 0%, #7c3aed 50%, #db2777 100%);
    background-size: 200% 200%;
    box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background-position: right center;
    transform: translateY(-1px);
}

/* অপ্রয়োজনীয় অংশগুলো রিমুভ */
.login-divider,
.login-footer {
    display: none !important;
}

/* কপিরাইট ফুটার */
.login-page-footer {
    text-align: center;
    margin-top: 14px;
}

.login-page-footer p {
    margin-bottom: 3px;
    font-size: 0.74rem !important;
    color: rgba(148, 163, 184, 0.45) !important;
}

.footer-link {
    color: #38bdf8;
    text-decoration: none;
}

/* অ্যানিমেশনসমূহ */
@keyframes rotateGalaxy {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes rotateStars {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}