/* ===== Auth pages (Login / Signup) ===== */
/* ===== Fully Responsive & Adaptive ===== */

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(100px, 15vh, 120px) clamp(16px, 4vw, 24px) 40px;
}

.auth-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: clamp(18px, 3vw, 22px);
    padding: clamp(22px, 4vw, 40px);
    width: 100%;
    max-width: clamp(360px, 90vw, 440px);
    box-shadow: var(--shadow);
}

.auth-flip-title {
    text-align: center;
    margin-bottom: clamp(20px, 3vw, 28px);
}

.auth-flip-title i {
    font-size: clamp(1.6rem, 3vw, 2rem);
    color: var(--orange-primary);
    margin-bottom: 12px;
}

.auth-flip-title h1 {
    font-size: var(--fs-xl);
    font-weight: 700;
    margin-bottom: 8px;
}

.auth-flip-title p {
    color: var(--text-muted);
    font-size: var(--fs-sm);
}

.auth-alt {
    text-align: center;
    margin-top: 18px;
    font-size: var(--fs-sm);
    color: var(--text-muted);
}

.auth-alt a {
    color: var(--orange-primary);
    font-weight: 600;
}

.auth-step {
    text-align: center;
}

.auth-step-icon {
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    margin: 0 auto 16px;
    border-radius: 18px;
    color: #fff;
    background: linear-gradient(145deg, #35aee2, #168ac1);
    box-shadow: 0 12px 30px rgba(31, 157, 215, 0.28);
    font-size: 1.9rem;
}

.auth-step h2 { margin-bottom: 8px; }
.auth-step > p { color: var(--text-muted); margin-bottom: 22px; line-height: 1.6; }

.otp-input {
    width: 100%;
    margin: 8px 0 14px;
    padding: 15px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    text-align: center;
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: 0.45em;
}

.btn-block + .btn-block { margin-top: 10px; }

.link-wait {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    margin: 18px 0 10px;
    color: var(--text-muted);
    font-size: var(--fs-sm);
}

.auth-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.18);
    border-top-color: var(--orange-primary);
    border-radius: 50%;
    animation: auth-spin .8s linear infinite;
}

.auth-spinner-inline {
    display: inline-block;
    margin-right: 7px;
    vertical-align: -2px;
}

.auth-security {
    margin-top: 24px;
    padding: 12px;
    border: 1px solid rgba(53, 174, 226, 0.22);
    border-radius: 12px;
    color: var(--text-muted);
    background: rgba(53, 174, 226, 0.06);
    text-align: center;
    font-size: var(--fs-xs);
}

.auth-security i { color: #35aee2; margin-right: 5px; }

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

/* ---------- Social buttons ---------- */
.auth-social {
    margin-top: 28px;
    text-align: center;
}

.auth-social-label {
    display: block;
    margin: 0 auto 16px;
    color: var(--text-muted);
    font-size: var(--fs-sm);
}

.auth-social-label::before,
.auth-social-label::after {
    content: "";
    display: inline-block;
    width: 40%;
    height: 1px;
    background: var(--glass-border);
    vertical-align: middle;
    margin: 0 10px;
}

.auth-social-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: clamp(9px, 1.5vw, 10px);
    border-radius: 10px;
    font-size: var(--fs-sm);
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    transition: all 0.25s;
    text-decoration: none;
    min-height: var(--touch-target);
}

.social-btn:hover {
    transform: translateY(-3px);
}

.social-btn.facebook:hover { background: #3b5998; }
.social-btn.twitter:hover { background: #00aced; }
.social-btn.google:hover { background: #dd4b39; }
.social-btn.instagram:hover { background: #e4405f; }

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */
@media (max-width: 768px) {
    .auth-page {
        padding: clamp(96px, 14vh, 120px) 16px 40px;
    }

    .auth-card {
        padding: clamp(24px, 4vw, 30px) clamp(18px, 3vw, 22px);
        border-radius: 18px;
    }
}

@media (max-width: 480px) {
    .auth-page {
        padding: clamp(88px, 13vh, 108px) clamp(10px, 2.5vw, 12px) 30px;
    }

    .auth-card {
        padding: clamp(20px, 3.5vw, 26px) clamp(16px, 3vw, 18px);
        border-radius: 16px;
    }

    .auth-flip-title h1 {
        font-size: var(--fs-lg);
    }

    .auth-flip-title p {
        font-size: var(--fs-xs);
    }

    .auth-social-buttons {
        gap: 8px;
    }

    .social-btn {
        padding: 9px 6px;
        font-size: var(--fs-xs);
    }

    .social-btn span {
        display: none;
    }

    .social-btn i {
        font-size: 1rem;
    }

    .auth-social-label::before,
    .auth-social-label::after {
        width: 30%;
    }

    .otp-input {
        letter-spacing: .3em;
        padding-left: calc(15px + .3em);
    }
}