/* ==========================================================================
   Quran&Me — Authentication pages
   Premium redesign, matching the landing page + chat design language.

   Serves: user_login.html, signup.html, login.html, forgot_password.html,
   reset_password.html, subscription_expired.html

   Dark mode: user_login.html has a toggle (auth.js sets body.dark-mode).
   Night sky lives on body::before — never animate filter on <body>.
   ========================================================================== */

:root {
    --paper: #FAFBFC;
    --paper-raised: #FFFFFF;
    --ink: #1B1D1E;
    --ink-soft: #52565C;
    --ink-faint: #8A8E94;
    --gold: #A9B0BC;
    --gold-soft: rgba(146, 155, 170, 0.35);
    --hairline: #E4E7EC;
    --accent: #2563EB;
    --accent-btn: #2563EB;
    --card-shadow: 0 1px 2px rgba(27, 29, 30, 0.04), 0 12px 40px -12px rgba(27, 29, 30, 0.10);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);

    /* Legacy names kept for safety */
    --auth-bg: var(--paper);
    --auth-text: var(--ink);
    --auth-text-secondary: var(--ink-soft);
    --auth-text-light: var(--ink-faint);
    --auth-border: var(--hairline);
    --auth-accent: var(--accent);
}

body.dark-mode {
    --paper: #0B0D17;
    --paper-raised: #121524;
    --ink: #EAEDF2;
    --ink-soft: #A8ABB4;
    --ink-faint: #6E7280;
    --gold: #C9D0DC;
    --gold-soft: rgba(201, 208, 220, 0.35);
    --hairline: rgba(234, 237, 242, 0.10);
    --accent: #7C9BFF;
    --accent-btn: #3B6BEB;
    --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 48px -12px rgba(0, 0, 0, 0.55);
}

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

html, body { min-height: 100%; }
html.dark-mode { background-color: #0B0D17; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    background: var(--paper);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 0.5s var(--ease), color 0.5s var(--ease);
}

/* Night sky (dark mode) — opacity-only shimmer on a pseudo layer */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity 1.2s var(--ease);
    background:
        radial-gradient(1px 1px at 12% 22%, rgba(255,255,255,0.55), transparent),
        radial-gradient(1px 1px at 78% 14%, rgba(255,255,255,0.4), transparent),
        radial-gradient(1.5px 1.5px at 55% 8%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 32% 45%, rgba(255,255,255,0.35), transparent),
        radial-gradient(1px 1px at 88% 38%, rgba(255,255,255,0.45), transparent),
        radial-gradient(1.5px 1.5px at 8% 66%, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 66% 58%, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 42% 78%, rgba(255,255,255,0.4), transparent),
        radial-gradient(1.5px 1.5px at 92% 74%, rgba(255,255,255,0.35), transparent),
        radial-gradient(1px 1px at 22% 90%, rgba(255,255,255,0.45), transparent),
        radial-gradient(0.5px 0.5px at 18% 38%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 48% 18%, rgba(255,255,255,0.5), transparent),
        radial-gradient(0.5px 0.5px at 72% 88%, rgba(255,255,255,0.55), transparent),
        radial-gradient(1px 1px at 5% 12%, rgba(255,255,255,0.5), transparent);
    animation: skyShimmer 9s ease-in-out infinite;
}
body.dark-mode::before { opacity: 1; }
@keyframes skyShimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.55; }
}

::selection { background: rgba(37, 99, 235, 0.18); }

/* ---------- Layout ---------- */

.auth-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-header {
    position: absolute;
    top: 18px;
    right: 18px;
}

/* The shared card: signup / reset / login / expired use .auth-card,
   the personal login page uses .auth-content — same treatment */
.auth-card, .auth-content {
    background: var(--paper-raised);
    border: 1px solid var(--hairline);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    padding: 44px 36px 36px;
    max-width: 440px;
    width: 100%;
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: cardRise 0.8s var(--ease);
}
.auth-card::before, .auth-content::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent 10%, var(--gold) 50%, transparent 90%);
}
@keyframes cardRise {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: none; }
}

.auth-card h1 {
    font-family: 'Instrument Serif', Georgia, serif;
    font-weight: 400;
    font-size: 27px;
    line-height: 1.2;
    color: var(--ink);
}
.auth-card h1::before {
    content: "\06DE";
    display: block;
    font-size: 14px;
    color: var(--gold);
    margin-bottom: 14px;
}
.auth-card > p {
    margin-top: 10px;
    font-size: 14.5px;
    color: var(--ink-soft);
}

/* Personal login page pieces */
.branded-url {
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gold);
}
.branded-url::before { content: "\06DE\00a0\00a0"; }
.branded-url::after { content: "\00a0\00a0\06DE"; }
.auth-greeting {
    font-family: 'Instrument Serif', Georgia, serif;
    font-weight: 400;
    font-size: 30px;
    line-height: 1.2;
    margin-top: 16px;
    color: var(--ink);
}
.auth-greeting .salaam-text { font-style: italic; }
.auth-greeting .username-text { color: var(--accent); }
.auth-content .welcome-message {
    margin-top: 12px;
    font-size: 14.5px;
    color: var(--ink-soft);
}
body.dark-mode .auth-greeting {
    color: #E9EEF6;
    text-shadow: 0 0 18px rgba(233, 238, 246, 0.35);
}

/* Gentle staged entrance used by user_login.html */
.fade-in { animation: cardRise 0.8s var(--ease) 0.15s backwards; }
.fade-in-delay { animation: cardRise 0.8s var(--ease) 0.3s backwards; }

/* ---------- Forms ---------- */

form { margin-top: 26px; text-align: left; }

.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin-bottom: 8px;
}
.form-group input, input[type="text"], input[type="email"], input[type="password"] {
    width: 100%;
    border: 1px solid var(--hairline);
    border-radius: 14px;
    background: var(--paper);
    color: var(--ink);
    font-family: 'Inter', sans-serif;
    font-size: 16px; /* stops iOS zoom-on-focus */
    padding: 13px 16px;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.form-group input:focus, input:focus {
    border-color: var(--gold-soft);
    box-shadow: 0 0 0 3px rgba(146, 155, 170, 0.12);
}
input::placeholder { color: var(--ink-faint); }
.form-group small {
    display: block;
    margin-top: 8px;
    font-size: 12.5px;
    color: var(--ink-faint);
}
#username-preview { color: var(--accent); font-weight: 550; }

/* Feedback messages */
.feedback {
    font-size: 13.5px;
    border-radius: 12px;
    padding: 11px 14px;
    margin-bottom: 14px;
    line-height: 1.55;
}
.feedback.error, .error-message {
    background: rgba(220, 38, 38, 0.07);
    border: 1px solid rgba(220, 38, 38, 0.2);
    color: #B23B3B;
}
body.dark-mode .feedback.error, body.dark-mode .error-message { color: #F0A8A8; }
.feedback.success {
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.22);
    color: #157347;
}
body.dark-mode .feedback.success { color: #6EE7A0; }
.error-message { margin-bottom: 20px; padding: 12px; }
#username-feedback { margin-top: 8px; font-size: 12.5px; padding: 0; background: none; border: none; }
#username-feedback.error { color: #B23B3B; }
#username-feedback.success { color: #157347; }

/* Primary button */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    background: var(--accent-btn);
    color: #fff;
    border: none;
    border-radius: 100px;
    padding: 15px 24px;
    font-family: 'Inter', sans-serif;
    font-size: 15.5px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 6px;
    text-decoration: none;
    box-shadow: 0 8px 24px -8px rgba(37, 99, 235, 0.5);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), opacity 0.3s;
}
.cta-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px -8px rgba(37, 99, 235, 0.55);
}
.cta-button:disabled { cursor: not-allowed; }

/* Password visibility toggle: a quiet drawn eye */
.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    width: 22px;
    height: 22px;
    display: inline-block;
    border: 1.5px solid var(--ink-faint);
    border-radius: 70% 15%; /* leaf shape; rotated 45deg it reads as an eye */
    transition: border-color 0.25s;
}
.password-toggle { transform: translateY(-50%) rotate(45deg); }
.password-toggle::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 6px;
    background: var(--ink-faint);
    border-radius: 50%;
    transition: background-color 0.25s;
}
.password-toggle:hover { border-color: var(--gold); }
.password-toggle:hover::before { background: var(--gold); }
.password-toggle.open { border-color: var(--accent); }
.password-toggle.open::before { background: var(--accent); }

/* Footer links */
.auth-footer { margin-top: 22px; text-align: center; }
.forgot-link, .auth-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
}
.forgot-link:hover, .auth-link:hover { text-decoration: underline; }
.contact-info {
    margin-top: 12px;
    font-size: 12.5px;
    color: var(--ink-faint);
}
.contact-info a { color: var(--ink-soft); text-decoration: none; }
.contact-info a:hover { color: var(--ink); }

/* ---------- Dark mode toggle (user_login.html) ---------- */

.dark-mode-toggle {
    width: 38px; height: 38px;
    border-radius: 50%;
    border: 1px solid var(--hairline);
    background: var(--paper-raised);
    cursor: pointer;
    font-size: 15px;
    line-height: 1;
    display: grid;
    place-items: center;
    transition: transform 0.3s var(--ease), border-color 0.3s;
}
.dark-mode-toggle:hover { transform: rotate(15deg); border-color: var(--gold-soft); }
.dark-mode-toggle .light-mode-icon { display: none; }
body.dark-mode .dark-mode-toggle .light-mode-icon { display: block; }
body.dark-mode .dark-mode-toggle .dark-mode-icon { display: none; }

/* ---------- Add-to-home-screen instructions (user_login.html) ---------- */

.app-instructions-container {
    max-width: 440px;
    width: 100%;
    margin-top: 18px;
}
.app-instructions-toggle {
    width: 100%;
    background: var(--paper-raised);
    border: 1px solid var(--hairline);
    border-radius: 16px;
    padding: 14px 18px;
    cursor: pointer;
    text-align: center;
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s;
}
.app-instructions-toggle:hover { border-color: var(--gold-soft); }
.app-instructions-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 550;
    color: var(--ink);
}
.toggle-arrow { font-size: 9px; color: var(--gold); }
.app-instructions-subtitle {
    display: block;
    margin-top: 3px;
    font-size: 12.5px;
    color: var(--ink-faint);
}
.app-instructions-content {
    background: var(--paper-raised);
    border: 1px solid var(--hairline);
    border-radius: 16px;
    padding: 20px 22px;
    margin-top: 10px;
    text-align: left;
}
.instructions-section + .instructions-section { margin-top: 18px; }
.instructions-platform-title {
    font-family: 'Instrument Serif', Georgia, serif;
    font-weight: 400;
    font-size: 17px;
    color: var(--ink);
    margin-bottom: 8px;
}
.instructions-steps {
    padding-left: 20px;
    font-size: 13.5px;
    color: var(--ink-soft);
}
.instructions-steps li { margin-bottom: 6px; }
.instructions-note {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--hairline);
    font-size: 12.5px;
    color: var(--ink-faint);
}

/* ---------- Small screens ---------- */

@media (max-width: 480px) {
    .auth-card, .auth-content { padding: 36px 24px 30px; }
}
