/* ==========================================================================
   English Placement Test — Frontend Styles
   Matches ilove-study theme: Montserrat/Inter, --color-primary: #c10007
   ========================================================================== */

/* ── Variables ── */
.ept {
    --ept-primary: #c10007;
    --ept-primary-hover: #a30006;
    --ept-dark: #0f1626;
    --ept-text: #364153;
    --ept-text-light: #6b7280;
    --ept-muted: #99a1af;
    --ept-white: #ffffff;
    --ept-bg: #f8f9fa;
    --ept-border: #e5e7eb;
    --ept-radius: 16px;
    --ept-radius-sm: 10px;
    --ept-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
    --ept-transition: 0.3s ease;
    --ept-font: 'Montserrat', sans-serif;
    --ept-font-body: 'Inter', sans-serif;

    /* Level colors */
    --ept-b2: #22c55e;
    --ept-b1plus: #3b82f6;
    --ept-b1: #f59e0b;
    --ept-a2plus: #f97316;
    --ept-a2: #ef4444;
}

/* ── Base wrapper ── */
.ept {
    font-family: var(--ept-font);
    color: var(--ept-text);
    max-width: 960px;
    margin: 40px auto;
    padding: 0 20px;
    position: relative;
}

/* ── Steps ── */
.ept__step {
    display: none;
    animation: eptFadeIn 0.5s ease;
}

.ept__step--active {
    display: block;
}

@keyframes eptFadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Card ── */
.ept__card {
    background: var(--ept-white);
    border-radius: var(--ept-radius);
    box-shadow: var(--ept-shadow);
    padding: 48px 40px;
}

/* ── Title / Desc ── */
.ept__title {
    font-family: var(--ept-font);
    font-size: 36px;
    font-weight: 700;
    color: var(--ept-dark);
    margin: 0 0 12px;
    line-height: 1.2;
}

.ept__desc {
    font-family: var(--ept-font-body);
    font-size: 16px;
    color: var(--ept-text-light);
    line-height: 1.6;
    margin: 0 0 24px;
}

/* ── Info grid (icons) ── */
.ept__info-grid {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.ept__info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--ept-font-body);
    font-size: 14px;
    color: var(--ept-text-light);
    background: var(--ept-bg);
    padding: 8px 16px;
    border-radius: 100px;
}

.ept__info-icon {
    font-size: 18px;
}

/* ── Form ── */
.ept__form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ept__field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ept__label {
    font-family: var(--ept-font);
    font-size: 14px;
    font-weight: 600;
    color: var(--ept-dark);
}

.ept__req {
    color: var(--ept-primary);
}

.ept__input {
    font-family: var(--ept-font-body);
    font-size: 16px;
    padding: 14px 18px;
    border: 2px solid var(--ept-border);
    border-radius: var(--ept-radius-sm);
    outline: none;
    transition: border-color var(--ept-transition), box-shadow var(--ept-transition);
    background: var(--ept-white);
    color: var(--ept-text);
}

.ept__input:focus {
    border-color: var(--ept-primary);
    box-shadow: 0 0 0 3px rgba(193, 0, 7, 0.1);
}

.ept__input.ept__input--error {
    border-color: var(--ept-primary);
}

.ept__error {
    font-family: var(--ept-font-body);
    font-size: 12px;
    color: var(--ept-primary);
    min-height: 16px;
}

/* ── Checkbox ── */
.ept__field--checkbox {
    flex-direction: row;
    align-items: flex-start;
    flex-wrap: wrap;
}

.ept__checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-family: var(--ept-font-body);
    font-size: 14px;
    color: var(--ept-text);
    line-height: 1.4;
}

.ept__checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--ept-primary);
    cursor: pointer;
    flex-shrink: 0;
}

/* ── Buttons ── */
.ept__btn {
    font-family: var(--ept-font);
    font-size: 18px;
    font-weight: 600;
    padding: 16px 40px;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: all var(--ept-transition);
    text-align: center;
}

.ept__btn--start,
.ept__btn--submit {
    background: var(--ept-primary);
    color: var(--ept-white);
    width: 100%;
    margin-top: 8px;
}

.ept__btn--start:hover,
.ept__btn--submit:hover {
    background: var(--ept-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(193, 0, 7, 0.3);
}

.ept__btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ── Test Header ── */
.ept__test-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.ept__test-subtitle {
    font-family: var(--ept-font-body);
    font-size: 14px;
    color: var(--ept-text-light);
    margin: 8px 0 0;
}

/* ── Timer ── */
.ept__timer {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--ept-dark);
    color: var(--ept-white);
    padding: 12px 24px;
    border-radius: 100px;
    font-family: var(--ept-font);
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
    letter-spacing: 1px;
}

.ept__timer--warning {
    background: var(--ept-primary);
    animation: eptPulse 1s infinite;
}

@keyframes eptPulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.7; }
}

/* ── Progress Bar ── */
.ept__progress-bar {
    position: relative;
    height: 8px;
    background: var(--ept-border);
    border-radius: 100px;
    margin-bottom: 32px;
    overflow: hidden;
}

.ept__progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--ept-primary), #ff4d5a);
    border-radius: 100px;
    width: 0%;
    transition: width 0.4s ease;
}

.ept__progress-text {
    position: absolute;
    right: 0;
    top: 14px;
    font-family: var(--ept-font-body);
    font-size: 13px;
    color: var(--ept-muted);
}

/* ── Parts ── */
.ept__part {
    margin-bottom: 40px;
}

.ept__part-header {
    background: var(--ept-dark);
    color: var(--ept-white);
    padding: 20px 28px;
    border-radius: var(--ept-radius-sm);
    margin-bottom: 20px;
}

.ept__part-title {
    font-family: var(--ept-font);
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    letter-spacing: 0.5px;
}

.ept__part-desc {
    font-family: var(--ept-font-body);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin: 8px 0 0;
}

/* ── Reading blocks ── */
.ept__reading-block {
    background: #f0f4ff;
    border-left: 4px solid var(--ept-b1plus);
    padding: 24px 28px;
    border-radius: 0 var(--ept-radius-sm) var(--ept-radius-sm) 0;
    margin-bottom: 20px;
}

.ept__reading-title {
    font-family: var(--ept-font);
    font-size: 16px;
    font-weight: 700;
    color: var(--ept-b1plus);
    margin: 0 0 12px;
}

.ept__reading-text {
    font-family: var(--ept-font-body);
    font-size: 15px;
    color: var(--ept-text);
    line-height: 1.7;
}

/* ── Question ── */
.ept__question {
    background: var(--ept-white);
    border: 2px solid var(--ept-border);
    border-radius: var(--ept-radius-sm);
    padding: 24px;
    margin-bottom: 16px;
    transition: border-color var(--ept-transition), box-shadow var(--ept-transition);
}

.ept__question.ept__question--answered {
    border-color: #d1fae5;
    background: #f0fdf4;
}

.ept__question.ept__question--unanswered {
    border-color: var(--ept-primary);
    background: #fef2f2;
    animation: eptShake 0.5s ease;
    box-shadow: 0 0 0 3px rgba(193, 0, 7, 0.15);
}

@keyframes eptShake {
    0%, 100% { transform: translateX(0); }
    20%      { transform: translateX(-6px); }
    40%      { transform: translateX(6px); }
    60%      { transform: translateX(-4px); }
    80%      { transform: translateX(4px); }
}

.ept__question-text {
    font-family: var(--ept-font);
    font-size: 16px;
    font-weight: 500;
    color: var(--ept-dark);
    margin-bottom: 16px;
    line-height: 1.5;
}

.ept__question-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--ept-dark);
    color: var(--ept-white);
    border-radius: 50%;
    font-size: 13px;
    font-weight: 700;
    margin-right: 10px;
    flex-shrink: 0;
}

/* ── Options ── */
.ept__options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ept__option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: 2px solid var(--ept-border);
    border-radius: var(--ept-radius-sm);
    cursor: pointer;
    transition: all var(--ept-transition);
    font-family: var(--ept-font-body);
    font-size: 15px;
    color: var(--ept-text);
}

.ept__option:hover {
    border-color: var(--ept-primary);
    background: rgba(193, 0, 7, 0.03);
}

.ept__option input[type="radio"] {
    display: none;
}

.ept__option input[type="radio"]:checked + .ept__option-letter {
    background: var(--ept-primary);
    color: var(--ept-white);
    border-color: var(--ept-primary);
}

.ept__option:has(input:checked) {
    border-color: var(--ept-primary);
    background: rgba(193, 0, 7, 0.04);
}

.ept__option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 2px solid var(--ept-border);
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
    color: var(--ept-text-light);
    flex-shrink: 0;
    transition: all var(--ept-transition);
}

.ept__option-text {
    flex: 1;
    line-height: 1.4;
}

/* ── Essay ── */
.ept__essay-block {
    background: var(--ept-white);
    border: 2px solid var(--ept-border);
    border-radius: var(--ept-radius-sm);
    padding: 24px;
}

.ept__essay-prompt {
    font-family: var(--ept-font);
    font-size: 14px;
    font-weight: 600;
    color: var(--ept-text-light);
    margin: 0 0 8px;
}

.ept__essay-question {
    font-family: var(--ept-font);
    font-size: 16px;
    font-weight: 600;
    color: var(--ept-dark);
    margin: 0 0 16px;
    line-height: 1.5;
}

.ept__textarea {
    width: 100%;
    font-family: var(--ept-font-body);
    font-size: 15px;
    padding: 16px;
    border: 2px solid var(--ept-border);
    border-radius: var(--ept-radius-sm);
    resize: vertical;
    outline: none;
    transition: border-color var(--ept-transition);
    line-height: 1.7;
    min-height: 180px;
    color: var(--ept-text);
}

.ept__textarea:focus {
    border-color: var(--ept-primary);
    box-shadow: 0 0 0 3px rgba(193, 0, 7, 0.1);
}

.ept__word-count {
    font-family: var(--ept-font-body);
    font-size: 13px;
    color: var(--ept-muted);
    text-align: right;
    margin-top: 8px;
}

/* ── Submit area ── */
.ept__submit-area {
    text-align: center;
    padding: 20px 0 40px;
}

.ept__btn--submit {
    max-width: 400px;
    font-size: 20px;
    padding: 18px 48px;
}

/* ── Results ── */
.ept__card--result {
    text-align: center;
    padding: 60px 40px;
}

.ept__result-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.ept__result-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 32px 0;
    flex-wrap: wrap;
}

.ept__result-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.ept__result-stat-label {
    font-family: var(--ept-font-body);
    font-size: 13px;
    color: var(--ept-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ept__result-stat-value {
    font-family: var(--ept-font);
    font-size: 40px;
    font-weight: 800;
    color: var(--ept-dark);
}

.ept__result-level {
    background: var(--ept-primary);
    color: var(--ept-white) !important;
    padding: 4px 24px;
    border-radius: 100px;
    font-size: 28px !important;
}

.ept__result-note {
    font-family: var(--ept-font-body);
    font-size: 15px;
    color: var(--ept-text-light);
    margin-top: 24px;
}

/* ── Loading overlay ── */
.ept__loading {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 22, 38, 0.7);
    backdrop-filter: blur(4px);
    z-index: 99999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 16px;
    color: var(--ept-white);
    font-family: var(--ept-font);
    font-size: 18px;
}

.ept__loading--active {
    display: flex;
}

.ept__spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--ept-white);
    border-radius: 50%;
    animation: eptSpin 0.8s linear infinite;
}

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

/* ── Responsive ── */
@media (max-width: 640px) {
    .ept {
        padding: 0 12px;
        margin: 20px auto;
    }

    .ept__card {
        padding: 32px 20px;
    }

    .ept__title {
        font-size: 26px;
    }

    .ept__info-grid {
        flex-direction: column;
        gap: 10px;
    }

    .ept__test-header {
        flex-direction: column;
    }

    .ept__timer {
        align-self: flex-end;
    }

    .ept__result-stats {
        flex-direction: column;
        gap: 24px;
    }

    .ept__question {
        padding: 16px;
    }

    .ept__option {
        padding: 10px 12px;
    }

    .ept__part-header {
        padding: 16px 20px;
    }

    .ept__btn--submit {
        font-size: 16px;
        padding: 14px 32px;
    }
}