/* =========================================
   STUDY PASS & RESTRICTION SYSTEM STYLES
   ========================================= */

/* --- Phase 1: Soft Warning Toast (p_struct.html) --- */
.study-pass-toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: #1f2937;
    color: #fff;
    padding: 12px 20px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    width: max-content;
    max-width: 90vw;
    animation: slideUpToast 0.4s ease;
}

@keyframes slideUpToast {
    from { opacity: 0; transform: translate(-50%, 20px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

.study-pass-toast button {
    background: none;
    border: none;
    color: #9ca3af;
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: 8px;
}

/* --- Phase 2: Upload Gate Modal (p_upload_gate.html) --- */
.gate-page {
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, #eef2ff, #f3e8ff);
    position: relative;
    overflow: hidden;
}

.gate-page::before, .gate-page::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    animation: floatOrb 8s infinite alternate ease-in-out;
}
.gate-page::before {
    width: 420px; height: 420px;
    background: radial-gradient(circle, rgba(124,58,237,0.15), transparent 70%);
    top: -100px; left: -100px;
}
.gate-page::after {
    width: 380px; height: 380px;
    background: radial-gradient(circle, rgba(37,99,235,0.15), transparent 70%);
    bottom: -100px; right: -80px;
    animation-delay: 2s;
}

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 40px) scale(1.1); }
}

.gate-card {
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.6);
    border-radius: 28px;
    max-width: 480px;
    width: 100%;
    padding: 2.8rem 2.2rem 2.4rem;
    text-align: center;
    position: relative;
    z-index: 1;
    box-shadow: 0 32px 64px rgba(17,24,39,0.08), 0 0 0 1px rgba(255,255,255,0.8) inset;
    animation: cardIn 0.5s cubic-bezier(.4,0,.2,1);
}
@keyframes cardIn {
    from { opacity: 0; transform: translateY(20px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.gate-lock {
    font-size: 3.8rem;
    display: block;
    margin-bottom: 1.2rem;
    animation: lockPulse 2.2s ease-in-out infinite;
    filter: drop-shadow(0 4px 16px rgba(37,99,235,0.3));
}
@keyframes lockPulse {
    0%,100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.gate-title {
    font-size: 1.7rem;
    font-weight: 800;
    color: #1f2937;
    margin: 0 0 0.6rem;
    letter-spacing: -0.3px;
}

.gate-subtitle {
    font-size: 1rem;
    color: #4b5563;
    margin: 0 0 2rem;
    line-height: 1.6;
}

.credit-meter {
    background: #f9fafb;
    border-radius: 14px;
    padding: 1.1rem 1.4rem;
    margin-bottom: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border: 1px solid #e5e7eb;
}
.credit-label {
    font-size: 0.88rem;
    color: #6b7280;
    text-align: left;
}
.credit-label strong {
    display: block;
    font-size: 1.1rem;
    color: #111827;
    margin-bottom: 0.2rem;
}
.credit-dots {
    display: flex;
    gap: 0.6rem;
}
.credit-dot {
    width: 18px; height: 18px;
    border-radius: 50%;
    background: #e5e7eb;
    border: 2px solid #d1d5db;
}
.credit-dot.used {
    background: #3b82f6;
    border-color: #3b82f6;
    box-shadow: 0 0 8px rgba(59,130,246,0.4);
}

.how-it-works {
    display: flex;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 2.2rem;
}
.how-step {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: #f3f4f6;
    border-radius: 30px;
    padding: 0.35rem 0.85rem;
    font-size: 0.82rem;
    color: #4b5563;
    border: 1px solid #e5e7eb;
    white-space: nowrap;
}
.how-step .step-icon { font-size: 1rem; }
.how-arrow { color: #9ca3af; font-size: 1rem; align-self: center; }

.gate-upload-btn {
    display: block;
    width: 100%;
    background: linear-gradient(135deg, #7c3aed, #2563eb);
    color: #fff;
    padding: 1.1rem;
    border-radius: 14px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 10px 25px rgba(37,99,235,0.3);
    margin-bottom: 1.2rem;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}
.gate-upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(37,99,235,0.4);
}

.gate-back-link {
    display: block;
    font-size: 0.95rem;
    color: #4b5563;
    background: #f3f4f6;
    padding: 0.8rem;
    border-radius: 12px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.15s;
}
.gate-back-link:hover { background: #e5e7eb; }

.gate-perks {
    margin: 1.6rem 0 0;
    padding-top: 1.4rem;
    border-top: 1px solid #e5e7eb;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.gate-perk {
    font-size: 0.82rem;
    color: #6b7280;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* --- Phase 3: Floating Chip (preview.html) --- */
.study-pass-chip-full {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    color: #1f2937;
    padding: 10px 16px;
    border-radius: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    z-index: 9000;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    border: 1px solid rgba(229,231,235,0.8);
    transition: all 0.3s ease;
    transform-origin: bottom right;
}
.study-pass-chip-full a {
    color: #2563eb;
    font-weight: 600;
    text-decoration: none;
}
.study-pass-chip-full button {
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    padding: 0;
    font-size: 1.1rem;
    line-height: 1;
}

.study-pass-chip-mini {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    color: #2563eb;
    padding: 8px 12px;
    border-radius: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    z-index: 8999;
    font-size: 0.8rem;
    font-weight: 700;
    border: 1px solid rgba(229,231,235,0.8);
    cursor: pointer;
    display: none;
    transition: all 0.3s ease;
}