/* Dana font is loaded inline from PHP (class-plugin.php) to keep paths dynamic */

:root {
    --khab-font: Dana, Tahoma, sans-serif;
    --khab-primary: #00a693;
    --khab-primary-dark: #008b7a;
    --khab-primary-light: #1ac4b0;
    --khab-accent: #00d4aa;
    --khab-bg-start: #f0fffe;
    --khab-bg-end: #e8f8f5;
    --khab-text: #1a202c;
    --khab-text-muted: #4a5568;
    --khab-white: #ffffff;
    --khab-border: #e2e8f0;
    --khab-border-focus: #00a693;
    --khab-shadow-sm: 0 2px 4px rgba(0, 166, 147, 0.04);
    --khab-shadow-md: 0 8px 25px rgba(0, 166, 147, 0.12);
    --khab-shadow-lg: 0 20px 60px rgba(0, 166, 147, 0.15);
    --khab-shadow-focus: 0 0 0 3px rgba(0, 166, 147, 0.1);
    --khab-radius-sm: 8px;
    --khab-radius: 16px;
    --khab-radius-lg: 24px;
    --khab-gradient-primary: linear-gradient(135deg, var(--khab-primary) 0%, var(--khab-accent) 100%);
    --khab-gradient-bg: linear-gradient(135deg, var(--khab-bg-start) 0%, var(--khab-bg-end) 100%);
}

/* Scope font to plugin elements only */
.khab-otp-el-wrapper, .khab-otp-section, .khab-otp-card, .khab-otp-modal, .khab-otp-blend {
    font-family: var(--khab-font, Dana, Tahoma, sans-serif) !important;
}

.khab-otp-section {
    background: var(--khab-gradient-bg);
    min-height: 100vh;
    padding: 2rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Background decorative elements */
.khab-otp-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -25%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 166, 147, 0.03) 0%, transparent 50%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.khab-otp-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 80%;
    height: 160%;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.02) 0%, transparent 60%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-20px) rotate(2deg);
    }
    66% {
        transform: translateY(10px) rotate(-1deg);
    }
}

.khab-otp-shell {
    max-width: 480px;
    width: 100%;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.khab-otp-card {
    background: var(--khab-white);
    color: var(--khab-text);
    border-radius: var(--khab-radius-lg);
    box-shadow: var(--khab-shadow-lg);
    padding: 2.5rem 2rem;
    margin: 0 auto;
    border: 1px solid var(--khab-border);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.khab-otp-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--khab-gradient-primary);
    border-radius: var(--khab-radius-lg) var(--khab-radius-lg) 0 0;
}

.khab-otp-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--khab-shadow-lg), 0 30px 80px rgba(0, 166, 147, 0.08);
}

.khab-otp-blend {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 2rem 1rem;
    background: none;
    box-shadow: none;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    text-align: center;
}

.khab-otp-blend .khab-otp-header {
    margin-bottom: 2rem;
    text-align: center;
    width: 100%;
    background: none;
}

.khab-otp-blend .khab-otp-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin: 0 0 1rem 0;
    letter-spacing: -0.02em;
    background: var(--khab-gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
}

.khab-otp-blend .khab-otp-desc {
    font-size: 1.125rem;
    color: var(--khab-text-muted);
    margin: 0 0 0.5rem 0;
    font-weight: 400;
    line-height: 1.6;
    text-align: center;
}

.khab-otp-blend .khab-otp-logo {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.khab-otp-blend .khab-otp-logo img {
    max-height: 56px;
    filter: drop-shadow(0 4px 6px rgba(0, 166, 147, 0.1));
}

.khab-otp-header {
    margin-bottom: 2rem;
    text-align: center;
}

.khab-otp-logo {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.khab-otp-logo img {
    max-height: 56px;
    filter: drop-shadow(0 4px 6px rgba(0, 166, 147, 0.1));
}

.khab-otp-title {
    margin: 0 0 1rem 0;
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--khab-text);
    position: relative;
    text-align: center;
}

.khab-otp-desc {
    margin: 0;
    color: var(--khab-text-muted);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    text-align: center;
}

.khab-otp-label {
    display: block;
    margin: 1.5rem 0 0.75rem;
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--khab-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: right;
}

.khab-otp-blend .khab-otp-label {
    margin: 2rem 0 1rem 0;
    font-weight: 700;
    font-size: 1rem;
    text-transform: none;
    letter-spacing: normal;
    text-align: center;
}

.khab-otp-input-row {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
    margin-bottom: 1rem;
}

.khab-otp-input-row--blend {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 0;
    width: 100%;
    align-items: stretch;
}

.khab-otp-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--khab-border);
    border-radius: var(--khab-radius);
    background: var(--khab-white);
    direction: ltr;
    font-size: 1rem;
    font-family: inherit;
    box-shadow: var(--khab-shadow-sm);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    position: relative;
}

.khab-otp-input--blend {
    width: 100%;
    padding: 1.125rem 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--khab-radius);
    font-size: 1rem;
    box-shadow: var(--khab-shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
}

.khab-otp-input:hover {
    border-color: var(--khab-primary-light);
    box-shadow: var(--khab-shadow-md);
}

.khab-otp-input:focus {
    border-color: var(--khab-border-focus);
    background: var(--khab-white);
    box-shadow: var(--khab-shadow-focus), var(--khab-shadow-md);
    transform: translateY(-1px);
}

.khab-otp-input--blend:hover {
    border-color: rgba(0, 166, 147, 0.3);
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-1px);
}

.khab-otp-input--blend:focus {
    border-color: var(--khab-primary);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--khab-shadow-focus), var(--khab-shadow-lg);
    transform: translateY(-2px);
}

.khab-otp-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.khab-otp-btn {
    background: var(--khab-gradient-primary);
    color: var(--khab-white);
    border: none;
    border-radius: var(--khab-radius);
    padding: 1rem 2rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    box-shadow: var(--khab-shadow-md);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    width: 100%;
}

.khab-otp-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.khab-otp-btn:hover::before {
    left: 100%;
}

.khab-otp-btn--blend {
    background: var(--khab-gradient-primary);
    color: #fff;
    font-weight: 700;
    border-radius: var(--khab-radius);
    box-shadow: var(--khab-shadow-lg), 0 0 20px rgba(0, 166, 147, 0.15);
    border: none;
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.khab-otp-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--khab-shadow-lg), 0 10px 40px rgba(0, 166, 147, 0.2);
}

.khab-otp-btn--blend:hover {
    transform: translateY(-3px);
    box-shadow: var(--khab-shadow-lg), 0 20px 60px rgba(0, 166, 147, 0.25);
}

.khab-otp-btn:active {
    transform: translateY(0);
}

.khab-otp-btn--blend:active {
    transform: translateY(-1px);
}

.khab-otp-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--khab-shadow-sm);
}

.khab-otp-btn--blend:disabled {
    opacity: 0.5;
    transform: none;
    box-shadow: var(--khab-shadow-sm);
}

.khab-otp-btn-muted {
    background: linear-gradient(135deg, #f7fafc 0%, #e2e8f0 100%);
    color: var(--khab-text-muted);
    box-shadow: var(--khab-shadow-sm);
    border: 1px solid var(--khab-border);
}

.khab-otp-btn--blend-muted {
    background: rgba(255, 255, 255, 0.8);
    color: var(--khab-primary);
    border: 2px solid rgba(0, 166, 147, 0.2);
    backdrop-filter: blur(10px);
}

.khab-otp-btn-muted:hover {
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e0 100%);
}

.khab-otp-btn--blend-muted:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 166, 147, 0.3);
}

.khab-otp-message {
    margin-top: 1.5rem;
    min-height: 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    padding: 0.75rem;
    border-radius: var(--khab-radius-sm);
    transition: all 0.2s ease;
}

.khab-otp-blend .khab-otp-message {
    margin: 1.5rem auto 0;
    width: 100%;
    max-width: 400px;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
}

.khab-otp-step[hidden] {
    display: none;
}

.khab-otp-step {
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.khab-otp-code-group {
    display: grid;
    /* Columns are set dynamically via JS to exactly the OTP length */
    gap: 0.75rem;
    direction: ltr;
    max-width: 340px;
    margin: 1.5rem auto;
    padding-top: 0.5rem;
    justify-content: center;
    width: 100%;
    box-sizing: border-box;
}

.khab-otp-blend .khab-otp-code-group {
    margin: 1.5rem auto;
    padding-top: 0.5rem;
    gap: 0.5rem;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
}

.khab-otp-code-digit {
    width: 100%;
    height: 50px;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 800;
    border: 2px solid var(--khab-border);
    border-radius: var(--khab-radius);
    background: var(--khab-white);
    font-family: inherit;
    box-shadow: var(--khab-shadow-sm);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    box-sizing: border-box;
    min-width: 0;
    max-width: 60px;
}

.khab-otp-code-digit:hover {
    border-color: var(--khab-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--khab-shadow-md);
}

input.khab-otp-code-digit:focus {
    border-color: var(--khab-border-focus);
    background: var(--khab-white);
    box-shadow: var(--khab-shadow-focus), var(--khab-shadow-md);
    transform: translateY(-2px);
}

.khab-otp-open-btn {
    background: var(--khab-gradient-primary);
    color: var(--khab-white);
    border: none;
    border-radius: var(--khab-radius);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-family: inherit;
    font-weight: 600;
    box-shadow: var(--khab-shadow-md);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.khab-otp-open-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--khab-shadow-lg);
}

.khab-otp-modal[hidden] {
    display: none;
}

.khab-otp-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.khab-otp-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
}

.khab-otp-modal-content {
    position: relative;
    margin: 10vh auto;
    background: var(--khab-white);
    max-width: 480px;
    width: 90%;
    border-radius: var(--khab-radius-lg);
    padding: 2rem;
    box-shadow: var(--khab-shadow-lg), 0 25px 100px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--khab-border);
    animation: slideInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(60px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.khab-otp-modal-close {
    position: absolute;
    left: 1rem;
    top: 1rem;
    border: none;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--khab-text-muted);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.khab-otp-modal-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--khab-text);
    transform: scale(1.05);
}

/* Enhanced responsive design */
@media (max-width: 640px) {
    .khab-otp-section {
        padding: 1rem 0.75rem;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .khab-otp-shell {
        width: 100%;
        max-width: 100%;
        margin: 0;
    }

    .khab-otp-card {
        padding: 2rem 1.5rem;
        margin: 0;
        border-radius: var(--khab-radius);
        width: 100%;
        box-sizing: border-box;
    }

    .khab-otp-blend {
        max-width: 100%;
        margin: 0;
        padding: 1.5rem 1rem;
        text-align: center;
    }

    .khab-otp-blend .khab-otp-title {
        font-size: 2rem;
        margin-bottom: 0.75rem;
    }

    .khab-otp-blend .khab-otp-desc {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .khab-otp-title {
        font-size: 1.5rem;
        margin-bottom: 0.75rem;
    }

    .khab-otp-desc {
        font-size: 0.875rem;
        margin-bottom: 1rem;
    }

    .khab-otp-input-row,
    .khab-otp-input-row--blend {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .khab-otp-btn,
    .khab-otp-btn--blend {
        width: 100%;
        padding: 1rem 1.5rem;
        font-size: 1rem;
        margin: 0;
    }

    .khab-otp-input,
    .khab-otp-input--blend {
        padding: 1rem 1.25rem;
        font-size: 1rem;
        width: 100%;
        box-sizing: border-box;
    }

    .khab-otp-code-group {
        gap: 0.5rem;
        max-width: 300px;
        padding-top: 0.5rem;
    }

    input.khab-otp-code-digit {
        width: 100%;
        height: 50px;
        font-size: 1.25rem;
        min-width: 0;
        max-width: 60px;
        line-height: 50px;
    }

    .khab-otp-actions {
        gap: 0.75rem;
        margin-top: 1.5rem;
    }

    .khab-otp-label {
        text-align: center;
        margin: 1.25rem 0 0.75rem;
    }

    .khab-otp-blend .khab-otp-label {
        text-align: center;
    }

    .khab-otp-message {
        margin-top: 1.25rem;
        text-align: center;
        font-size: 0.875rem;
    }

    .khab-otp-modal-content {
        margin: 5vh auto;
        width: 95%;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .khab-otp-section {
        padding: 0.5rem;
    }

    .khab-otp-card {
        padding: 1.5rem 1.25rem;
        border-radius: var(--khab-radius);
    }

    .khab-otp-blend .khab-otp-title {
        font-size: 1.75rem;
    }

    .khab-otp-title {
        font-size: 1.375rem;
    }

    .khab-otp-code-group {
        gap: 0.375rem;
        max-width: 260px;
        padding-top: 0.5rem;
    }

    input.khab-otp-code-digit {
        height: 45px;
        font-size: 1.125rem;
        min-width: 0;
        max-width: 60px;
        line-height: 45px;
    }

    .khab-otp-modal-content {
        padding: 1.25rem;
        width: 96%;
    }
}

/* WooCommerce My Account Integration - Responsive fixes */
.woocommerce form.login .khab-otp-blend,
.woocommerce-form-login .khab-otp-blend,
.woocommerce .khab-otp-blend {
    max-width: 100%;
    width: 100%;
    margin: 0;
    padding: 1rem;
    box-sizing: border-box;
}

.woocommerce form.login .khab-otp-code-group,
.woocommerce-form-login .khab-otp-code-group,
.woocommerce .khab-otp-code-group {
    max-width: 100%;
    width: 100%;
    gap: 0.5rem;
    margin: 1rem auto;
    padding-top: 0.5rem;
    box-sizing: border-box;
}

.woocommerce form.login .khab-otp-code-digit,
.woocommerce-form-login .khab-otp-code-digit,
.woocommerce .khab-otp-code-digit {
    height: 45px;
    font-size: 1.125rem;
    max-width: 50px;
    min-width: 0;
    box-sizing: border-box;
}

.woocommerce form.login .khab-otp-input-row--blend,
.woocommerce-form-login .khab-otp-input-row--blend,
.woocommerce .khab-otp-input-row--blend {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.woocommerce form.login .khab-otp-input--blend,
.woocommerce-form-login .khab-otp-input--blend,
.woocommerce .khab-otp-input--blend {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.woocommerce form.login .khab-otp-btn--blend,
.woocommerce-form-login .khab-otp-btn--blend,
.woocommerce .khab-otp-btn--blend {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

/* Responsive breakpoints for WooCommerce integration */
@media (max-width: 480px) {
    .woocommerce form.login .khab-otp-code-group,
    .woocommerce-form-login .khab-otp-code-group,
    .woocommerce .khab-otp-code-group {
        gap: 0.375rem;
        max-width: 100%;
        padding-top: 0.5rem;
    }

    .woocommerce form.login .khab-otp-code-digit,
    .woocommerce-form-login .khab-otp-code-digit,
    .woocommerce .khab-otp-code-digit {
        height: 40px;
        font-size: 1rem;
        max-width: 45px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}