/* RESET & BASE */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-color: #e8f0fe;
    --bg-gradient: linear-gradient(135deg, #e8f0fe 0%, #f4f6f9 100%);
    --text-color: #1e293b;
    --primary-color: #2ecc71;
    --secondary-color: #facc15;
    --card-bg: rgba(255, 255, 255, 0.8);
    --border-color: #e2e8f0;
    --error-color: #360d0d;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-color);
    padding: 2rem 1rem;
    line-height: 1.6;
    min-height: 100vh;
}

body.dark-mode {
    --bg-color: #1e293b;
    --bg-gradient: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --text-color: #f1f5f9;
    --card-bg: rgba(30, 41, 59, 0.8);
    --border-color: #475569;
}

body.high-contrast {
    --bg-color: #000;
    --bg-gradient: none;
    --text-color: #fff;
    --primary-color: #0f0;
    --secondary-color: #ff0;
    --card-bg: #000;
    --border-color: #fff;
}

/* HEADER */
.app {
    max-width: 900px;
    margin: auto;
}

.app__header {
    text-align: center;
    margin-bottom: 2.5rem;
    animation: fadeIn 0.5s ease-out;
    background-image: linear-gradient(to right, rgba(0, 128, 0, 0.501), rgba(89, 147, 1, 0.386)), url('../assets/img/hq720.jpg');
    background-size: cover;
    background-position: top;
    background-repeat: no-repeat;
    position: relative;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.app__header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 12px;
    z-index: 1;
}

.app__header>* {
    position: relative;
    z-index: 2;
}

.app__header-controls {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.app__header h1 {
    color: #ffffff;
    font-size: 2.5rem;
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.app__header p {
    color: #f1f5f9;
    font-size: 1.2rem;
    font-weight: 500;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

/* SECTION */
.section {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.section:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
}

.section h2 {
    margin-bottom: 1.25rem;
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: 600;
}

/* FORM GROUPS */
.form__group {
    margin-bottom: 1.25rem;
}

.form__group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

input[type="text"],
input[type="number"],
input[type="file"],
input[type="color"],
select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    accent-color: green;
    font-size: 1rem;
    background: #ffffff;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.1);
}

input:invalid.error--visible,
select:invalid.error--visible {
    border-color: var(--error-color);
    animation: shake 0.3s ease;
}

.form__hint {
    display: block;
    font-size: 0.875rem;
    color: #64748b;
    margin-top: 0.25rem;
}

.error {
    color: var(--error-color);
    font-size: 0.875rem;
    display: none;
}

.error--visible {
    display: block;
}

.form__actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ITEM ROWS */
.item-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr auto;
    gap: 0.75rem;
    margin-bottom: 1rem;
    animation: slideIn 0.3s ease-out;
}

.item-row--invalid {
    animation: shake 0.3s ease;
}

.remove-item,
.delete-receipt {
    background: rgba(0, 128, 0, 0.611);
    color: white;
    padding: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    border: none;
    justify-content: center;
    font-size: 0.9rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

/* BUTTONS */
.btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: scale(0.95);
}

.btn--primary {
    background-color: var(--primary-color);
    color: white;
}

.btn--primary:hover {
    background-color: #27ae60;
}

.btn--secondary {
    background-color: var(--secondary-color);
    color: #1e293b;
}

.btn--secondary:hover {
    background-color: #eab308;
}

.btn--ghost {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.btn--ghost:hover {
    background-color: #f1f5f9;
}

.btn--whatsapp {
    background-color: #25d366;
    color: white;
}

.btn--whatsapp:hover {
    background-color: #20b958;
}

.btn--print {
    background-color: #3b82f6;
    color: white;
}

.btn--print:hover {
    background-color: #2563eb;
}

.btn--voice {
    background-color: #8b5cf6;
    color: white;
}

.btn--voice.recording {
    animation: pulse 1.5s infinite;
}

.btn--voice:hover {
    background-color: #7c3aed;
}

.btn--save {
    background-color: #6b7280;
    color: white;
}

.btn--save:hover {
    background-color: #4b5563;
}

/* RECEIPT OUTPUT */
.receipt {
    background: #ffffff;
    padding: 1rem;
    border-radius: 6px;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.875rem;
    min-height: 350px;
    position: relative;
    animation: fadeIn 0.5s ease-out;
    border: 1px solid var(--border-color);
}

.receipt p {
    margin-bottom: 0.6rem;
    line-height: 1.4;
}

.receipt__item {
    margin-top: 1rem;
    padding-top: 0.5rem;
    border-top: 1px dashed #475569;
}

.receipt__logo {
    display: block;
    max-width: 100px;
    margin: 0 auto 1.5rem;
}

.watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.08;
    pointer-events: none;
}

/* RECEIPT STYLES */
.receipt--default {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.85rem;
    border: 1px dashed #475569;
    background: #f9fafb;
}

.receipt--modern {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    background: linear-gradient(145deg, #ffffff, #f1f5f9);
}

.receipt--market {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.85rem;
    background: repeating-linear-gradient(45deg,
            #ffffff,
            #ffffff 10px,
            #f9fafb 10px,
            #f9fafb 20px);
    border: 3px solid var(--primary-color);
    color: var(--text-color);
}

/* PAST RECEIPTS */
.receipt-list {
    display: grid;
    gap: 1rem;
}

.receipt-list__item {
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.receipt-list__item:hover {
    background: #f1f5f9;
}

.receipt-list__details {
    flex: 1;
}

/* MODAL */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    cursor: pointer;
}

.modal__content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    animation: fadeIn 0.3s ease-out;
    cursor: default;
}

.modal__content ul {
    list-style: disc;
    padding-left: 1.5rem;
}

/* TOAST */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #1e293b;
    color: #fff;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    display: none;
}

.toast--visible {
    display: block;
    animation: slideIn 0.3s ease-out;
}

/* FOOTER */
.app__footer {
    text-align: center;
    margin-top: 2rem;
}

.app__footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.app__footer a:hover {
    text-decoration: underline;
}

/* ICONS */
.icon--large {
    font-size: 1.5rem;
}

/* ANIMATIONS */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-10px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes shake {
    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

/* RESPONSIVE */
@media (max-width: 600px) {
    .item-row {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 1.5rem;
    }

    .btn {
        padding: 0.75rem;
        flex: 1;
        font-size: 0.9rem;
    }

    input,
    select {
        font-size: 1.1rem;
        padding: 1rem;
    }

    .receipt-list__item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .app__header {
        padding: 1.5rem;
    }

    .app__header h1 {
        font-size: 2rem;
    }

    .app__header p {
        font-size: 1rem;
    }
}