/* =============================================
   MUSEiT Base Styles
   Shared between Sender and Player
   ============================================= */

/* ===== RESET ===== */
* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

/* ===== CSS VARIABLES (Light Mode) ===== */
:root {
    /* Core palette */
    --primary: #0C6170;
    --mint: #37BEB0;
    --tiffany: #A4E5E0;
    --baby: #DBF5F0;
    --accent: #774422;

    /* Functional tokens */
    --secondary: var(--accent);
    --bg: #FFFFFF;
    --surface: #FFFFFF;
    --surface-2: #F3FBFA;
    --text: #000000;
    --text-secondary: #334155;
    --border: rgba(12, 97, 112, 0.18);
    --success: #10b981;
    --error: #ef4444;
    --danger: #ef4444;

    /* Effects */
    --ring: rgba(55, 190, 176, 0.35);
    --shadow: 0 14px 44px rgba(0, 0, 0, 0.12);
    --shadow-soft: 0 10px 30px rgba(12, 97, 112, 0.14);

    /* Background pattern */
    --bg-pattern:
        radial-gradient(900px 420px at 10% -10%, rgba(164, 229, 224, 0.70) 0%, rgba(255, 255, 255, 0) 60%),
        radial-gradient(700px 380px at 90% 0%, rgba(55, 190, 176, 0.35) 0%, rgba(255, 255, 255, 0) 55%),
        radial-gradient(900px 520px at 50% 110%, rgba(219, 245, 240, 0.95) 0%, rgba(255, 255, 255, 0) 65%),
        #FFFFFF;
}

/* ===== DARK MODE VARIABLES ===== */
[data-theme="dark"] {
    --bg: #000000;
    --surface: #071214;
    --surface-2: #0B1B1E;
    --text: #FFFFFF;
    --text-secondary: rgba(219, 245, 240, 0.78);
    --border: rgba(164, 229, 224, 0.16);

    --ring: rgba(164, 229, 224, 0.22);
    --shadow: 0 18px 55px rgba(0, 0, 0, 0.55);
    --shadow-soft: 0 12px 36px rgba(55, 190, 176, 0.14);

    --bg-pattern:
        radial-gradient(900px 420px at 12% -10%, rgba(12, 97, 112, 0.55) 0%, rgba(0, 0, 0, 0) 60%),
        radial-gradient(700px 380px at 88% 0%, rgba(55, 190, 176, 0.22) 0%, rgba(0, 0, 0, 0) 55%),
        radial-gradient(900px 520px at 50% 110%, rgba(119, 68, 34, 0.16) 0%, rgba(0, 0, 0, 0) 65%),
        #000000;
}

/* ===== BASE BODY ===== */
body {
    font-family: 'Manrope', sans-serif;
    background: var(--bg-pattern);
    color: var(--text);
    transition: background 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    color-scheme: light;
}

body[data-theme="dark"] { 
    color-scheme: dark; 
}

/* ===== CONTAINER ===== */
.container {
    max-width: 640px;
    margin: 0 auto;
    padding: 20px;
}

/* ===== HEADER ===== */
.header {
    text-align: center;
    padding: 44px 20px 28px;
    position: relative;
}

.logo {
    height: auto;
    width: 200px;
    margin: 0 auto 16px;
    display: block;
    transition: filter 0.3s ease;
}

[data-theme="dark"] .logo {
    filter: brightness(0) invert(1);
}

/* ===== TYPOGRAPHY ===== */
h1,
.success-title {
    font-family: 'Poppins', 'Manrope', sans-serif;
    letter-spacing: -0.6px;
}

h1 {
    font-size: 30px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
    line-height: 1.15;
}

.subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-top: 8px;
}

/* ===== GLASSMORPHISM CARD ===== */
.card,
.moment-card {
    border-radius: 18px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(14px);
    transition: all 0.3s ease;
}

[data-theme="dark"] .card,
[data-theme="dark"] .moment-card {
    background: rgba(7, 18, 20, 0.72);
    border-color: rgba(164, 229, 224, 0.14);
}

/* ===== PRIMARY BUTTON ===== */
.primary-button {
    width: 100%;
    padding: 16px 24px;
    background: radial-gradient(120% 120% at 30% 20%, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0) 45%),
                linear-gradient(135deg, var(--primary) 0%, var(--mint) 100%);
    color: white;
    border: none;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 600;
    font-family: 'Manrope', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 14px 34px rgba(12, 97, 112, 0.28);
}

.primary-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 18px 44px rgba(12, 97, 112, 0.36);
}

.primary-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ===== LOADING SPINNER ===== */
.loading {
    display: none;
    text-align: center;
    padding: 48px 20px;
}

.loading.active { 
    display: block; 
}

.spinner {
    width: 44px;
    height: 44px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin { 
    to { transform: rotate(360deg); } 
}

/* ===== UTILITY CLASSES ===== */
.hidden { 
    display: none !important; 
}

/* ===== ACCESSIBILITY ===== */
:focus-visible {
    outline: 3px solid rgba(55, 190, 176, 0.55);
    outline-offset: 2px;
}

[data-theme="dark"] :focus-visible {
    outline-color: rgba(164, 229, 224, 0.45);
}

/* ===== MOBILE BASE ===== */
@media (max-width: 640px) {
    .container { 
        padding: 12px; 
    }
    
    .header { 
        padding: 24px 12px 24px; 
    }
    
    .logo { 
        width: 160px; 
    }
    
    h1 { 
        font-size: 22px; 
    }
}