/* ========================================
   OTP VERIFICATION MODAL
   Modern, responsive, premium design
   ======================================== */

.otp-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.otp-overlay.active {
    opacity: 1;
    visibility: visible;
}

.otp-modal {
    background: #1A1814;
    border-radius: 20px;
    width: 100%;
    max-width: 420px;
    padding: 40px 32px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
    position: relative;
    box-sizing: border-box;
}

.otp-overlay.active .otp-modal {
    transform: scale(1) translateY(0);
}

.otp-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border: none;
    background: #2A2520;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
}

.otp-close:hover {
    background: #3A3530;
    transform: rotate(90deg);
}

.otp-close svg {
    width: 18px;
    height: 18px;
    stroke: #64748b;
}

.otp-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #C9A84C 0%, #A6832E 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(201, 168, 76, 0.3);
}

.otp-icon svg {
    width: 36px;
    height: 36px;
    stroke: #fff;
    stroke-width: 2;
}

.otp-icon.success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
}

.otp-icon.error {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.3);
}

.otp-title {
    font-size: 24px;
    font-weight: 700;
    color: #F0ECE2;
    text-align: center;
    margin: 0 0 8px;
}

.otp-subtitle {
    font-size: 14px;
    color: #64748b;
    text-align: center;
    margin: 0 0 32px;
    line-height: 1.5;
}

.otp-subtitle strong {
    color: #F0ECE2;
}

/* OTP Input Fields */
.otp-inputs {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 24px;
}

.otp-input {
    width: 52px;
    height: 60px;
    border: 2px solid #2A2520;
    border-radius: 12px;
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    color: #F0ECE2;
    background: #151210;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
    -webkit-appearance: none;
    -moz-appearance: textfield;
    appearance: none;
}

.otp-input::-webkit-outer-spin-button,
.otp-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}

.otp-input:focus {
    outline: none;
    border-color: #C9A84C;
    box-shadow: 0 0 0 4px rgba(201, 168, 76, 0.15);
    background: #1A1814;
}

.otp-input.filled {
    border-color: #10b981;
    background: #f0fdf4;
}

.otp-input.error {
    border-color: #ef4444;
    background: #fef2f2;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
    20%, 40%, 60%, 80% { transform: translateX(4px); }
}

/* Timer */
.otp-timer {
    text-align: center;
    margin-bottom: 24px;
}

.otp-timer-text {
    font-size: 14px;
    color: #64748b;
}

.otp-timer-countdown {
    font-size: 20px;
    font-weight: 700;
    color: #F0ECE2;
    font-variant-numeric: tabular-nums;
}

.otp-timer-countdown.warning {
    color: #f59e0b;
}

.otp-timer-countdown.danger {
    color: #ef4444;
}

/* Resend */
.otp-resend {
    text-align: center;
    margin-bottom: 24px;
}

.otp-resend-btn {
    background: none;
    border: none;
    color: #C9A84C;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
}

.otp-resend-btn:hover:not(:disabled) {
    background: rgba(201,168,76,0.1);
}

.otp-resend-btn:disabled {
    color: #94a3b8;
    cursor: not-allowed;
}

.otp-resend-cooldown {
    font-size: 13px;
    color: #94a3b8;
}

/* Error Message */
.otp-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s, transform 0.3s;
}

.otp-error.visible {
    opacity: 1;
    transform: translateY(0);
}

.otp-error-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.otp-error-text {
    font-size: 13px;
    color: #dc2626;
    line-height: 1.4;
}

/* Verify Button */
.otp-verify-btn {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, #C9A84C 0%, #A6832E 100%);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
    box-shadow: 0 4px 16px rgba(201, 168, 76, 0.3);
    box-sizing: border-box;
}

.otp-verify-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(201, 168, 76, 0.4);
}

.otp-verify-btn:active:not(:disabled) {
    transform: translateY(0);
}

.otp-verify-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.otp-verify-btn.loading {
    position: relative;
    color: transparent;
}

.otp-verify-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    left: 50%;
    top: 50%;
    margin-left: -10px;
    margin-top: -10px;
}

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

/* Success State */
.otp-success {
    text-align: center;
    padding: 20px 0;
}

.otp-success-text {
    font-size: 18px;
    font-weight: 600;
    color: #10b981;
    margin-top: 16px;
}

/* Attempts Warning */
.otp-attempts {
    text-align: center;
    font-size: 12px;
    color: #94a3b8;
    margin-top: 16px;
}

.otp-attempts.warning {
    color: #f59e0b;
}

.otp-attempts.danger {
    color: #ef4444;
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .otp-modal {
        padding: 32px 24px;
        border-radius: 16px;
    }

    .otp-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 20px;
    }

    .otp-icon svg {
        width: 28px;
        height: 28px;
    }

    .otp-title {
        font-size: 20px;
    }

    .otp-subtitle {
        font-size: 13px;
        margin-bottom: 24px;
    }

    .otp-inputs {
        gap: 8px;
    }

    .otp-input {
        width: 44px;
        height: 52px;
        font-size: 20px;
        border-radius: 10px;
    }

    .otp-verify-btn {
        padding: 14px 20px;
        font-size: 15px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .otp-modal {
        background: #1A1814;
    }

    .otp-close {
        background: #2A2520;
    }

    .otp-close:hover {
        background: #3A3530;
    }

    .otp-close svg {
        stroke: #94a3b8;
    }

    .otp-title {
        color: #F0ECE2;
    }

    .otp-subtitle {
        color: #94a3b8;
    }

    .otp-subtitle strong {
        color: #F0ECE2;
    }

    .otp-input {
        background: #2A2520;
        border-color: #3A3530;
        color: #F0ECE2;
    }

    .otp-input:focus {
        background: #1A1814;
        border-color: #C9A84C;
    }

    .otp-input.filled {
        background: #064e3b;
        border-color: #10b981;
    }

    .otp-timer-countdown {
        color: #F0ECE2;
    }

    .otp-error {
        background: #450a0a;
        border-color: #7f1d1d;
    }

    .otp-error-text {
        color: #fca5a5;
    }
}